666667340074 has 16 divisors (see below), whose sum is σ = 1019328057000. Its totient is φ = 326896989120.

The previous prime is 666667340071. The next prime is 666667340093. The reversal of 666667340074 is 470043766666.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 662177670049 + 4489670025 = 813743^2 + 67005^2 .

It is a junction number, because it is equal to n+sod(n) for n = 666667339997 and 666667340024.

It is not an unprimeable number, because it can be changed into a prime (666667340071) 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, 1180449 + ... + 1651300.

Almost surely, 2^666667340074 is an apocalyptic number.

666667340074 is a deficient number, since it is larger than the sum of its proper divisors (352660716926).

666667340074 is a wasteful number, since it uses less digits than its factorization.

666667340074 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2834025.

The product of its (nonzero) digits is 18289152, while the sum is 55.

The spelling of 666667340074 in words is "six hundred sixty-six billion, six hundred sixty-seven million, three hundred forty thousand, seventy-four".