775877680 has 40 divisors (see below), whose sum is σ = 1806246000. Its totient is φ = 309950208.

The previous prime is 775877659. The next prime is 775877693. The reversal of 775877680 is 86778577.

It is a tau number, because it is divible by the number of its divisors (40).

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, 60471 + ... + 72169.

It is an arithmetic number, because the mean of its divisors is an integer number (45156150).

Almost surely, 2^775877680 is an apocalyptic number.

It is an amenable number.

775877680 is an abundant number, since it is smaller than the sum of its proper divisors (1030368320).

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

775877680 is a wasteful number, since it uses less digits than its factorization.

775877680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12541 (or 12535 counting only the distinct ones).

The product of its (nonzero) digits is 4609920, while the sum is 55.

The square root of 775877680 is about 27854.5809517932. The cubic root of 775877680 is about 918.8918920715.

The spelling of 775877680 in words is "seven hundred seventy-five million, eight hundred seventy-seven thousand, six hundred eighty".