76612640 has 48 divisors (see below), whose sum is σ = 194925528. Its totient is φ = 28286976.

The previous prime is 76612619. The next prime is 76612667. The reversal of 76612640 is 4621667.

It can be written as a sum of positive squares in 4 ways, for example, as 22619536 + 53993104 = 4756^2 + 7348^2 .

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a junction number, because it is equal to n+sod(n) for n = 76612597 and 76612606.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16337 + ... + 20496.

Almost surely, 2^76612640 is an apocalyptic number.

It is an amenable number.

76612640 is an abundant number, since it is smaller than the sum of its proper divisors (118312888).

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

76612640 is a wasteful number, since it uses less digits than its factorization.

76612640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36861 (or 36853 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 32.

The square root of 76612640 is about 8752.8646739225. The cubic root of 76612640 is about 424.7174869854.

It can be divided in two parts, 7661 and 2640, that added together give a palindrome (10301).

The spelling of 76612640 in words is "seventy-six million, six hundred twelve thousand, six hundred forty".