666734074 has 16 divisors (see below), whose sum is σ = 1044146880. Its totient is φ = 318700800.

The previous prime is 666734071. The next prime is 666734077. The reversal of 666734074 is 470437666.

It is an interprime number because it is at equal distance from previous prime (666734071) and next prime (666734077).

It is a self number, because there is not a number n which added to its sum of digits gives 666734074.

It is not an unprimeable number, because it can be changed into a prime (666734071) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 136474 + ... + 141274.

It is an arithmetic number, because the mean of its divisors is an integer number (65259180).

Almost surely, 2^666734074 is an apocalyptic number.

666734074 is a deficient number, since it is larger than the sum of its proper divisors (377412806).

666734074 is a wasteful number, since it uses less digits than its factorization.

666734074 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7845.

The product of its (nonzero) digits is 508032, while the sum is 43.

The square root of 666734074 is about 25821.1942791188. The cubic root of 666734074 is about 873.6099066088.

The spelling of 666734074 in words is "six hundred sixty-six million, seven hundred thirty-four thousand, seventy-four".