667486645607 has 16 divisors (see below), whose sum is σ = 709878118560. Its totient is φ = 626421817728.

The previous prime is 667486645591. The next prime is 667486645619. The reversal of 667486645607 is 706546684766.

It is a cyclic number.

It is not a de Polignac number, because 667486645607 - 2⁴ = 667486645591 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (667486645687) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 757808 + ... + 1381754.

It is an arithmetic number, because the mean of its divisors is an integer number (44367382410).

Almost surely, 2^667486645607 is an apocalyptic number.

667486645607 is a deficient number, since it is larger than the sum of its proper divisors (42391472953).

667486645607 is a wasteful number, since it uses less digits than its factorization.

667486645607 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 625010.

The product of its (nonzero) digits is 243855360, while the sum is 65.

The spelling of 667486645607 in words is "six hundred sixty-seven billion, four hundred eighty-six million, six hundred forty-five thousand, six hundred seven".