674355021 has 4 divisors (see below), whose sum is σ = 899140032. Its totient is φ = 449570012.

The previous prime is 674355001. The next prime is 674355023. The reversal of 674355021 is 120553476.

674355021 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, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 674355021 - 2⁶ = 674354957 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (674355023) 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, 112392501 + ... + 112392506.

It is an arithmetic number, because the mean of its divisors is an integer number (224785008).

Almost surely, 2^674355021 is an apocalyptic number.

It is an amenable number.

674355021 is a deficient number, since it is larger than the sum of its proper divisors (224785011).

674355021 is a wasteful number, since it uses less digits than its factorization.

674355021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224785010.

The product of its (nonzero) digits is 25200, while the sum is 33.

The square root of 674355021 is about 25968.3465203312. The cubic root of 674355021 is about 876.9258353839.

The spelling of 674355021 in words is "six hundred seventy-four million, three hundred fifty-five thousand, twenty-one".