673756631 has 16 divisors (see below), whose sum is σ = 721838304. Its totient is φ = 626663424.

The previous prime is 673756621. The next prime is 673756667. The reversal of 673756631 is 136657376.

673756631 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-673756631 is a prime.

It is a super-2 number, since 2×673756631² = 907895995632940322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (673756621) 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, 567020 + ... + 568206.

It is an arithmetic number, because the mean of its divisors is an integer number (45114894).

Almost surely, 2^673756631 is an apocalyptic number.

673756631 is a deficient number, since it is larger than the sum of its proper divisors (48081673).

673756631 is a wasteful number, since it uses less digits than its factorization.

673756631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1570.

The product of its digits is 476280, while the sum is 44.

The square root of 673756631 is about 25956.8224365002. The cubic root of 673756631 is about 876.6663781141. Note that the first 3 decimals are identical.

The spelling of 673756631 in words is "six hundred seventy-three million, seven hundred fifty-six thousand, six hundred thirty-one".