76777080 has 64 divisors (see below), whose sum is σ = 237772800. Its totient is φ = 19812480.

The previous prime is 76777079. The next prime is 76777087. The reversal of 76777080 is 8077767.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76777087) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6600 + ... + 14039.

It is an arithmetic number, because the mean of its divisors is an integer number (3715200).

Almost surely, 2^76777080 is an apocalyptic number.

It is an amenable number.

76777080 is an abundant number, since it is smaller than the sum of its proper divisors (160995720).

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

76777080 is a wasteful number, since it uses less digits than its factorization.

76777080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20684 (or 20680 counting only the distinct ones).

The product of its (nonzero) digits is 115248, while the sum is 42.

The square root of 76777080 is about 8762.2531348963. The cubic root of 76777080 is about 425.0211385103.

The spelling of 76777080 in words is "seventy-six million, seven hundred seventy-seven thousand, eighty".