674743631 has 4 divisors (see below), whose sum is σ = 685805064. Its totient is φ = 663682200.

The previous prime is 674743579. The next prime is 674743649. The reversal of 674743631 is 136347476.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-674743631 is a prime.

It is a super-2 number, since 2×674743631² = 910557935150128322, 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 (674743031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5530625 + ... + 5530746.

It is an arithmetic number, because the mean of its divisors is an integer number (171451266).

Almost surely, 2^674743631 is an apocalyptic number.

674743631 is a gapful number since it is divisible by the number (61) formed by its first and last digit.

674743631 is a deficient number, since it is larger than the sum of its proper divisors (11061433).

674743631 is a wasteful number, since it uses less digits than its factorization.

674743631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11061432.

The product of its digits is 254016, while the sum is 41.

The square root of 674743631 is about 25975.8278212649. The cubic root of 674743631 is about 877.0942514745.

The spelling of 674743631 in words is "six hundred seventy-four million, seven hundred forty-three thousand, six hundred thirty-one".