674033021 has 4 divisors (see below), whose sum is σ = 674971200. Its totient is φ = 673094844.

The previous prime is 674032991. The next prime is 674033023. The reversal of 674033021 is 120330476.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-674033021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (674033023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 468011 + ... + 469448.

It is an arithmetic number, because the mean of its divisors is an integer number (168742800).

Almost surely, 2^674033021 is an apocalyptic number.

It is an amenable number.

674033021 is a deficient number, since it is larger than the sum of its proper divisors (938179).

674033021 is an equidigital number, since it uses as much as digits as its factorization.

674033021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 938178.

The product of its (nonzero) digits is 3024, while the sum is 26.

The square root of 674033021 is about 25962.1459244031. The cubic root of 674033021 is about 876.7862377608.

Adding to 674033021 its reverse (120330476), we get a palindrome (794363497).

The spelling of 674033021 in words is "six hundred seventy-four million, thirty-three thousand, twenty-one".