76620540 has 48 divisors (see below), whose sum is σ = 225832320. Its totient is φ = 19356480.

The previous prime is 76620529. The next prime is 76620587. The reversal of 76620540 is 4502667.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 76620498 and 76620507.

It is a congruent number.

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, 32466 + ... + 34745.

It is an arithmetic number, because the mean of its divisors is an integer number (4704840).

Almost surely, 2^76620540 is an apocalyptic number.

It is an amenable number.

76620540 is an abundant number, since it is smaller than the sum of its proper divisors (149211780).

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

76620540 is a wasteful number, since it uses less digits than its factorization.

76620540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67242 (or 67240 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 30.

The square root of 76620540 is about 8753.3159431155. The cubic root of 76620540 is about 424.7320848934.

The spelling of 76620540 in words is "seventy-six million, six hundred twenty thousand, five hundred forty".