77877460 has 24 divisors (see below), whose sum is σ = 163709280. Its totient is φ = 31119264.

The previous prime is 77877451. The next prime is 77877461. The reversal of 77877460 is 6477877.

It is a self number, because there is not a number n which added to its sum of digits gives 77877460.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77877461) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34651 + ... + 36829.

It is an arithmetic number, because the mean of its divisors is an integer number (6821220).

Almost surely, 2^77877460 is an apocalyptic number.

It is an amenable number.

77877460 is an abundant number, since it is smaller than the sum of its proper divisors (85831820).

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

77877460 is a wasteful number, since it uses less digits than its factorization.

77877460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3975 (or 3973 counting only the distinct ones).

The product of its (nonzero) digits is 460992, while the sum is 46.

The square root of 77877460 is about 8824.8206780648. The cubic root of 77877460 is about 427.0420023510.

The spelling of 77877460 in words is "seventy-seven million, eight hundred seventy-seven thousand, four hundred sixty".