77465540 has 24 divisors (see below), whose sum is σ = 163924992. Its totient is φ = 30748640.

The previous prime is 77465513. The next prime is 77465551. The reversal of 77465540 is 4556477.

It is a junction number, because it is equal to n+sod(n) for n = 77465494 and 77465503.

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, 12164 + ... + 17403.

It is an arithmetic number, because the mean of its divisors is an integer number (6830208).

Almost surely, 2^77465540 is an apocalyptic number.

It is an amenable number.

77465540 is an abundant number, since it is smaller than the sum of its proper divisors (86459452).

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

77465540 is a wasteful number, since it uses less digits than its factorization.

77465540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29707 (or 29705 counting only the distinct ones).

The product of its (nonzero) digits is 117600, while the sum is 38.

The square root of 77465540 is about 8801.4510167358. The cubic root of 77465540 is about 426.2877481670.

The spelling of 77465540 in words is "seventy-seven million, four hundred sixty-five thousand, five hundred forty".