674374621 has 4 divisors (see below), whose sum is σ = 680342652. Its totient is φ = 668406592.

The previous prime is 674374553. The next prime is 674374637. The reversal of 674374621 is 126473476.

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

It can be written as a sum of positive squares in 2 ways, for example, as 26112100 + 648262521 = 5110^2 + 25461^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-674374621 is a prime.

It is a super-2 number, since 2×674374621² = 909562258897787282, 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 (674174621) 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, 2983846 + ... + 2984071.

It is an arithmetic number, because the mean of its divisors is an integer number (170085663).

Almost surely, 2^674374621 is an apocalyptic number.

It is an amenable number.

674374621 is a deficient number, since it is larger than the sum of its proper divisors (5968031).

674374621 is a wasteful number, since it uses less digits than its factorization.

674374621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5968030.

The product of its digits is 169344, while the sum is 40.

The square root of 674374621 is about 25968.7239001072. The cubic root of 674374621 is about 876.9343311956.

The spelling of 674374621 in words is "six hundred seventy-four million, three hundred seventy-four thousand, six hundred twenty-one".