674431631 has 2 divisors, whose sum is σ = 674431632. Its totient is φ = 674431630.

The previous prime is 674431621. The next prime is 674431649. The reversal of 674431631 is 136134476.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-674431631 is a prime.

It is a super-2 number, since 2×674431631² = 909716049786640322, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 674431591 and 674431600.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (674431601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 337215815 + 337215816.

It is an arithmetic number, because the mean of its divisors is an integer number (337215816).

Almost surely, 2^674431631 is an apocalyptic number.

674431631 is a deficient number, since it is larger than the sum of its proper divisors (1).

674431631 is an equidigital number, since it uses as much as digits as its factorization.

674431631 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36288, while the sum is 35.

The square root of 674431631 is about 25969.8215434762. The cubic root of 674431631 is about 876.9590418020.

The spelling of 674431631 in words is "six hundred seventy-four million, four hundred thirty-one thousand, six hundred thirty-one".