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70956541 = 233085067
BaseRepresentation
bin1000011101010…
…11010111111101
311221111222002001
410032223113331
5121131102131
611012502301
71521056245
oct416532775
9157458061
1070956541
1137064777
121b91a991
1311915026
1495d0b25
156369261
hex43ab5fd

70956541 has 4 divisors (see below), whose sum is σ = 74041632. Its totient is φ = 67871452.

The previous prime is 70956517. The next prime is 70956569. The reversal of 70956541 is 14565907.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 14565907 = 16787221.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-70956541 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 70956541.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70956841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1542511 + ... + 1542556.

It is an arithmetic number, because the mean of its divisors is an integer number (18510408).

Almost surely, 270956541 is an apocalyptic number.

It is an amenable number.

70956541 is a deficient number, since it is larger than the sum of its proper divisors (3085091).

70956541 is a wasteful number, since it uses less digits than its factorization.

70956541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3085090.

The product of its (nonzero) digits is 37800, while the sum is 37.

The square root of 70956541 is about 8423.5705612288. The cubic root of 70956541 is about 413.9972714080.

The spelling of 70956541 in words is "seventy million, nine hundred fifty-six thousand, five hundred forty-one".

Divisors: 1 23 3085067 70956541