75640624 has 20 divisors (see below), whose sum is σ = 147369040. Its totient is φ = 37609920.

The previous prime is 75640561. The next prime is 75640627. The reversal of 75640624 is 42604657.

It is a super-3 number, since 3×75640624³ (a number of 25 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 75640624.

It is not an unprimeable number, because it can be changed into a prime (75640627) 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, 10164 + ... + 15955.

It is an arithmetic number, because the mean of its divisors is an integer number (7368452).

Almost surely, 2^75640624 is an apocalyptic number.

It is an amenable number.

75640624 is a deficient number, since it is larger than the sum of its proper divisors (71728416).

75640624 is a wasteful number, since it uses less digits than its factorization.

75640624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26308 (or 26302 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 34.

The square root of 75640624 is about 8697.1618359095. The cubic root of 75640624 is about 422.9136483153.

The spelling of 75640624 in words is "seventy-five million, six hundred forty thousand, six hundred twenty-four".