674401618 has 32 divisors (see below), whose sum is σ = 1173695040. Its totient is φ = 287400960.

The previous prime is 674401613. The next prime is 674401619. The reversal of 674401618 is 816104476.

It is a happy number.

It is a super-2 number, since 2×674401618² = 909635084722035848, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (674401613) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32230 + ... + 48862.

It is an arithmetic number, because the mean of its divisors is an integer number (36677970).

Almost surely, 2^674401618 is an apocalyptic number.

674401618 is a deficient number, since it is larger than the sum of its proper divisors (499293422).

674401618 is a wasteful number, since it uses less digits than its factorization.

674401618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16762.

The product of its (nonzero) digits is 32256, while the sum is 37.

The square root of 674401618 is about 25969.2436932615. The cubic root of 674401618 is about 876.9460330398.

The spelling of 674401618 in words is "six hundred seventy-four million, four hundred one thousand, six hundred eighteen".