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70012001 = 1717212393
BaseRepresentation
bin1000010110001…
…00110001100001
311212201222102002
410023010301201
5120410341001
610540333345
71510043423
oct413046141
9155658362
1070012001
113657a064
121b544255
1311674127
149426813
15622e46b
hex42c4c61

70012001 has 8 divisors (see below), whose sum is σ = 74204424. Its totient is φ = 65827840.

The previous prime is 70011983. The next prime is 70012039. The reversal of 70012001 is 10021007.

It can be written as a sum of positive squares in 4 ways, for example, as 7980625 + 62031376 = 2825^2 + 7876^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 70012001 - 218 = 69749857 is a prime.

It is a super-4 number, since 4×700120014 (a number of 32 digits) contains 4444 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70012301) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28061 + ... + 30453.

It is an arithmetic number, because the mean of its divisors is an integer number (9275553).

Almost surely, 270012001 is an apocalyptic number.

It is an amenable number.

70012001 is a deficient number, since it is larger than the sum of its proper divisors (4192423).

70012001 is a wasteful number, since it uses less digits than its factorization.

70012001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4131.

The product of its (nonzero) digits is 14, while the sum is 11.

The square root of 70012001 is about 8367.3174315308. The cubic root of 70012001 is about 412.1520807993.

Adding to 70012001 its reverse (10021007), we get a palindrome (80033008).

The spelling of 70012001 in words is "seventy million, twelve thousand, one".

Divisors: 1 17 1721 2393 29257 40681 4118353 70012001