70915664 has 10 divisors (see below), whose sum is σ = 137399130. Its totient is φ = 35457824.

The previous prime is 70915661. The next prime is 70915667. The reversal of 70915664 is 46651907.

It is an interprime number because it is at equal distance from previous prime (70915661) and next prime (70915667).

It can be written as a sum of positive squares in only one way, i.e., 70425664 + 490000 = 8392^2 + 700^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70915661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2216099 + ... + 2216130.

It is an arithmetic number, because the mean of its divisors is an integer number (13739913).

Almost surely, 2^70915664 is an apocalyptic number.

It is an amenable number.

70915664 is a deficient number, since it is larger than the sum of its proper divisors (66483466).

70915664 is a wasteful number, since it uses less digits than its factorization.

70915664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4432237 (or 4432231 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 38.

The square root of 70915664 is about 8421.1438652953. The cubic root of 70915664 is about 413.9177569289.

The spelling of 70915664 in words is "seventy million, nine hundred fifteen thousand, six hundred sixty-four".