777700385 has 16 divisors (see below), whose sum is σ = 1163521152. Its totient is φ = 484800000.

The previous prime is 777700361. The next prime is 777700397. The reversal of 777700385 is 583007777.

It is not a de Polignac number, because 777700385 - 2¹⁴ = 777684001 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1009616 + ... + 1010385.

It is an arithmetic number, because the mean of its divisors is an integer number (72720072).

Almost surely, 2^777700385 is an apocalyptic number.

It is an amenable number.

777700385 is a deficient number, since it is larger than the sum of its proper divisors (385820767).

777700385 is a wasteful number, since it uses less digits than its factorization.

777700385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2020024.

The product of its (nonzero) digits is 288120, while the sum is 44.

The square root of 777700385 is about 27887.2799856852. The cubic root of 777700385 is about 919.6108881430.

The spelling of 777700385 in words is "seven hundred seventy-seven million, seven hundred thousand, three hundred eighty-five".