70640624 has 20 divisors (see below), whose sum is σ = 139779744. Its totient is φ = 34568448.

The previous prime is 70640621. The next prime is 70640629. The reversal of 70640624 is 42604607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70640621) 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, 46217 + ... + 47720.

Almost surely, 2^70640624 is an apocalyptic number.

It is an amenable number.

70640624 is a deficient number, since it is larger than the sum of its proper divisors (69139120).

70640624 is a wasteful number, since it uses less digits than its factorization.

70640624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93992 (or 93986 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 29.

The square root of 70640624 is about 8404.7976775173. The cubic root of 70640624 is about 413.3819494209.

The spelling of 70640624 in words is "seventy million, six hundred forty thousand, six hundred twenty-four".