674406731 has 4 divisors (see below), whose sum is σ = 675049464. Its totient is φ = 673764000.

The previous prime is 674406727. The next prime is 674406739. The reversal of 674406731 is 137604476.

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

It is a cyclic number.

It is not a de Polignac number, because 674406731 - 2² = 674406727 is a prime.

It is a super-2 number, since 2×674406731² = 909648877636212722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (674406739) 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, 319790 + ... + 321891.

It is an arithmetic number, because the mean of its divisors is an integer number (168762366).

Almost surely, 2^674406731 is an apocalyptic number.

674406731 is a deficient number, since it is larger than the sum of its proper divisors (642733).

674406731 is a wasteful number, since it uses less digits than its factorization.

674406731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 642732.

The product of its (nonzero) digits is 84672, while the sum is 38.

The square root of 674406731 is about 25969.3421364500. The cubic root of 674406731 is about 876.9482492334.

The spelling of 674406731 in words is "six hundred seventy-four million, four hundred six thousand, seven hundred thirty-one".