70317657 has 6 divisors (see below), whose sum is σ = 101569962. Its totient is φ = 46878432.

The previous prime is 70317629. The next prime is 70317659. The reversal of 70317657 is 75671307.

It can be written as a sum of positive squares in only one way, i.e., 63536841 + 6780816 = 7971^2 + 2604^2 .

It is not a de Polignac number, because 70317657 - 2¹⁰ = 70316633 is a prime.

It is not an unprimeable number, because it can be changed into a prime (70317659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3906528 + ... + 3906545.

It is an arithmetic number, because the mean of its divisors is an integer number (16928327).

Almost surely, 2^70317657 is an apocalyptic number.

It is an amenable number.

70317657 is a deficient number, since it is larger than the sum of its proper divisors (31252305).

70317657 is a wasteful number, since it uses less digits than its factorization.

70317657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7813079 (or 7813076 counting only the distinct ones).

The product of its (nonzero) digits is 30870, while the sum is 36.

The square root of 70317657 is about 8385.5624140543. The cubic root of 70317657 is about 412.7509965548.

The spelling of 70317657 in words is "seventy million, three hundred seventeen thousand, six hundred fifty-seven".