667407474707 has 2 divisors, whose sum is σ = 667407474708. Its totient is φ = 667407474706.

The previous prime is 667407474697. The next prime is 667407474733. The reversal of 667407474707 is 707474704766.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-667407474707 is a prime.

It is not a weakly prime, because it can be changed into another prime (667407474787) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 333703737353 + 333703737354.

It is an arithmetic number, because the mean of its divisors is an integer number (333703737354).

Almost surely, 2^667407474707 is an apocalyptic number.

667407474707 is a deficient number, since it is larger than the sum of its proper divisors (1).

667407474707 is an equidigital number, since it uses as much as digits as its factorization.

667407474707 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 38723328, while the sum is 59.

The spelling of 667407474707 in words is "six hundred sixty-seven billion, four hundred seven million, four hundred seventy-four thousand, seven hundred seven".