305778664 has 16 divisors (see below), whose sum is σ = 580593600. Its totient is φ = 150953712.

The previous prime is 305778661. The next prime is 305778667. The reversal of 305778664 is 466877503.

It is an interprime number because it is at equal distance from previous prime (305778661) and next prime (305778667).

It is not an unprimeable number, because it can be changed into a prime (305778661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 241282 + ... + 242545.

It is an arithmetic number, because the mean of its divisors is an integer number (36287100).

Almost surely, 2^305778664 is an apocalyptic number.

It is an amenable number.

305778664 is a deficient number, since it is larger than the sum of its proper divisors (274814936).

305778664 is a wasteful number, since it uses less digits than its factorization.

305778664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 483912 (or 483908 counting only the distinct ones).

The product of its (nonzero) digits is 846720, while the sum is 46.

The square root of 305778664 is about 17486.5280716327. The cubic root of 305778664 is about 673.7038971486.

The spelling of 305778664 in words is "three hundred five million, seven hundred seventy-eight thousand, six hundred sixty-four".