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75071069 = 597117921
BaseRepresentation
bin1000111100101…
…11111001011101
312020021000010222
410132113321131
5123204233234
611241011125
71601044043
oct436277135
9166230128
1075071069
1139415007
1221183aa5
1312725a68
149d82393
1568cd42e
hex4797e5d

75071069 has 8 divisors (see below), whose sum is σ = 77423040. Its totient is φ = 72755200.

The previous prime is 75071063. The next prime is 75071089. The reversal of 75071069 is 96017057.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-75071069 is a prime.

It is a super-2 number, since 2×750710692 = 11271330801605522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75071063) 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 7 ways as a sum of consecutive naturals, for example, 4772 + ... + 13149.

It is an arithmetic number, because the mean of its divisors is an integer number (9677880).

Almost surely, 275071069 is an apocalyptic number.

It is an amenable number.

75071069 is a deficient number, since it is larger than the sum of its proper divisors (2351971).

75071069 is a wasteful number, since it uses less digits than its factorization.

75071069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18051.

The product of its (nonzero) digits is 13230, while the sum is 35.

The square root of 75071069 is about 8664.3562369053. The cubic root of 75071069 is about 421.8494948568.

The spelling of 75071069 in words is "seventy-five million, seventy-one thousand, sixty-nine".

Divisors: 1 59 71 4189 17921 1057339 1272391 75071069