77460520 has 32 divisors (see below), whose sum is σ = 174636000. Its totient is φ = 30922048.

The previous prime is 77460469. The next prime is 77460547. The reversal of 77460520 is 2506477.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21831 + ... + 25129.

It is an arithmetic number, because the mean of its divisors is an integer number (5457375).

Almost surely, 2^77460520 is an apocalyptic number.

It is an amenable number.

77460520 is an abundant number, since it is smaller than the sum of its proper divisors (97175480).

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

77460520 is a wasteful number, since it uses less digits than its factorization.

77460520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3897 (or 3893 counting only the distinct ones).

The product of its (nonzero) digits is 11760, while the sum is 31.

The square root of 77460520 is about 8801.1658318657. The cubic root of 77460520 is about 426.2785397253.

Adding to 77460520 its reverse (2506477), we get a palindrome (79966997).

The spelling of 77460520 in words is "seventy-seven million, four hundred sixty thousand, five hundred twenty".