80777385 has 32 divisors (see below), whose sum is σ = 154654080. Its totient is φ = 39766464.

The previous prime is 80777377. The next prime is 80777453. The reversal of 80777385 is 58377708.

It is not a de Polignac number, because 80777385 - 2³ = 80777377 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 80777385.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21259 + ... + 24768.

It is an arithmetic number, because the mean of its divisors is an integer number (4832940).

Almost surely, 2^80777385 is an apocalyptic number.

It is an amenable number.

80777385 is a deficient number, since it is larger than the sum of its proper divisors (73876695).

80777385 is a wasteful number, since it uses less digits than its factorization.

80777385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46054 (or 46048 counting only the distinct ones).

The product of its (nonzero) digits is 329280, while the sum is 45.

The square root of 80777385 is about 8987.6239907998. The cubic root of 80777385 is about 432.2781291533.

The spelling of 80777385 in words is "eighty million, seven hundred seventy-seven thousand, three hundred eighty-five".