70394657 has 4 divisors (see below), whose sum is σ = 70453440. Its totient is φ = 70335876.

The previous prime is 70394641. The next prime is 70394693. The reversal of 70394657 is 75649307.

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.

It is a cyclic number.

It is not a de Polignac number, because 70394657 - 2⁴ = 70394641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70393657) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27557 + ... + 30002.

It is an arithmetic number, because the mean of its divisors is an integer number (17613360).

Almost surely, 2^70394657 is an apocalyptic number.

It is an amenable number.

70394657 is a deficient number, since it is larger than the sum of its proper divisors (58783).

70394657 is a wasteful number, since it uses less digits than its factorization.

70394657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58782.

The product of its (nonzero) digits is 158760, while the sum is 41.

The square root of 70394657 is about 8390.1523824064. The cubic root of 70394657 is about 412.9015999473.

The spelling of 70394657 in words is "seventy million, three hundred ninety-four thousand, six hundred fifty-seven".