70964640 has 96 divisors (see below), whose sum is σ = 248391360. Its totient is φ = 18922752.

The previous prime is 70964633. The next prime is 70964657. The reversal of 70964640 is 4646907.

70964640 is a `hidden beast` number, since 7 + 0 + 9 + 6 + 4 + 640 = 666.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 70964595 and 70964604.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3894 + ... + 12533.

It is an arithmetic number, because the mean of its divisors is an integer number (2587410).

Almost surely, 2^70964640 is an apocalyptic number.

It is an amenable number.

70964640 is an abundant number, since it is smaller than the sum of its proper divisors (177426720).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

70964640 is a wasteful number, since it uses less digits than its factorization.

70964640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16451 (or 16437 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The square root of 70964640 is about 8424.0512818952. The cubic root of 70964640 is about 414.0130220647.

The spelling of 70964640 in words is "seventy million, nine hundred sixty-four thousand, six hundred forty".