666667400674 has 8 divisors (see below), whose sum is σ = 1090910292048. Its totient is φ = 303030636660.

The previous prime is 666667400669. The next prime is 666667400681. The reversal of 666667400674 is 476004766666.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15151531812 + ... + 15151531855.

It is an arithmetic number, because the mean of its divisors is an integer number (136363786506).

Almost surely, 2^666667400674 is an apocalyptic number.

666667400674 is a deficient number, since it is larger than the sum of its proper divisors (424242891374).

666667400674 is a wasteful number, since it uses less digits than its factorization.

666667400674 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30303063680.

The product of its (nonzero) digits is 36578304, while the sum is 58.

The spelling of 666667400674 in words is "six hundred sixty-six billion, six hundred sixty-seven million, four hundred thousand, six hundred seventy-four".