674066840 has 32 divisors (see below), whose sum is σ = 1517412960. Its totient is φ = 269491200.

The previous prime is 674066803. The next prime is 674066843. The reversal of 674066840 is 48660476.

It is a super-2 number, since 2×674066840² = 908732209575171200, which contains 22 as substring.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (674066843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 125000 + ... + 130280.

It is an arithmetic number, because the mean of its divisors is an integer number (47419155).

Almost surely, 2^674066840 is an apocalyptic number.

It is an amenable number.

674066840 is an abundant number, since it is smaller than the sum of its proper divisors (843346120).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

674066840 is a wasteful number, since it uses less digits than its factorization.

674066840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8483 (or 8479 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 41.

The square root of 674066840 is about 25962.7972298826. The cubic root of 674066840 is about 876.8009015022.

The spelling of 674066840 in words is "six hundred seventy-four million, sixty-six thousand, eight hundred forty".