667462431657 has 16 divisors (see below), whose sum is σ = 1026591086592. Its totient is φ = 377842550160.

The previous prime is 667462431637. The next prime is 667462431683. The reversal of 667462431657 is 756134264766.

It is a happy number.

It is not a de Polignac number, because 667462431657 - 2⁷ = 667462431529 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 667462431597 and 667462431606.

It is not an unprimeable number, because it can be changed into a prime (667462431617) 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, 148520769 + ... + 148525262.

It is an arithmetic number, because the mean of its divisors is an integer number (64161942912).

Almost surely, 2^667462431657 is an apocalyptic number.

It is an amenable number.

667462431657 is a deficient number, since it is larger than the sum of its proper divisors (359128654935).

667462431657 is a wasteful number, since it uses less digits than its factorization.

667462431657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 297046148.

The product of its digits is 30481920, while the sum is 57.

The spelling of 667462431657 in words is "six hundred sixty-seven billion, four hundred sixty-two million, four hundred thirty-one thousand, six hundred fifty-seven".