673746463657 has 16 divisors (see below), whose sum is σ = 731016997200. Its totient is φ = 618445864960.

The previous prime is 673746463601. The next prime is 673746463669. The reversal of 673746463657 is 756364647376.

It can be written as a sum of positive squares in 8 ways, for example, as 12283067241 + 661463396416 = 110829^2 + 813304^2 .

It is a cyclic number.

It is not a de Polignac number, because 673746463657 - 2⁷ = 673746463529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (673746463697) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1996569 + ... + 2309497.

It is an arithmetic number, because the mean of its divisors is an integer number (45688562325).

Almost surely, 2^673746463657 is an apocalyptic number.

It is an amenable number.

673746463657 is a deficient number, since it is larger than the sum of its proper divisors (57270533543).

673746463657 is a wasteful number, since it uses less digits than its factorization.

673746463657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 316076.

The product of its digits is 320060160, while the sum is 64.

The spelling of 673746463657 in words is "six hundred seventy-three billion, seven hundred forty-six million, four hundred sixty-three thousand, six hundred fifty-seven".