674262521 has 4 divisors (see below), whose sum is σ = 674449572. Its totient is φ = 674075472.

The previous prime is 674262469. The next prime is 674262541. The reversal of 674262521 is 125262476.

674262521 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 545689600 + 128572921 = 23360^2 + 11339^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-674262521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (674262541) 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, 88010 + ... + 95363.

It is an arithmetic number, because the mean of its divisors is an integer number (168612393).

Almost surely, 2^674262521 is an apocalyptic number.

It is an amenable number.

674262521 is a deficient number, since it is larger than the sum of its proper divisors (187051).

674262521 is a wasteful number, since it uses less digits than its factorization.

674262521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187050.

The product of its digits is 40320, while the sum is 35.

The square root of 674262521 is about 25966.5654448177. The cubic root of 674262521 is about 876.8857381322.

The spelling of 674262521 in words is "six hundred seventy-four million, two hundred sixty-two thousand, five hundred twenty-one".