77365020 has 48 divisors (see below), whose sum is σ = 217169568. Its totient is φ = 20578560.

The previous prime is 77365009. The next prime is 77365033. The reversal of 77365020 is 2056377.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26262 + ... + 29058.

It is an arithmetic number, because the mean of its divisors is an integer number (4524366).

Almost surely, 2^77365020 is an apocalyptic number.

It is an amenable number.

77365020 is an abundant number, since it is smaller than the sum of its proper divisors (139804548).

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

77365020 is a wasteful number, since it uses less digits than its factorization.

77365020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3270 (or 3268 counting only the distinct ones).

The product of its (nonzero) digits is 8820, while the sum is 30.

The square root of 77365020 is about 8795.7387410041. The cubic root of 77365020 is about 426.1032833835.

The spelling of 77365020 in words is "seventy-seven million, three hundred sixty-five thousand, twenty".