74639804 has 12 divisors (see below), whose sum is σ = 134150184. Its totient is φ = 36311184.

The previous prime is 74639801. The next prime is 74639813. The reversal of 74639804 is 40893647.

74639804 = 3051² + 3052² + ... + 3058².

It is a super-2 number, since 2×74639804² = 11142200682316832, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74639801) 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, 252014 + ... + 252309.

It is an arithmetic number, because the mean of its divisors is an integer number (11179182).

Almost surely, 2^74639804 is an apocalyptic number.

74639804 is a gapful number since it is divisible by the number (74) formed by its first and last digit.

It is an amenable number.

74639804 is a deficient number, since it is larger than the sum of its proper divisors (59510380).

74639804 is a wasteful number, since it uses less digits than its factorization.

74639804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 504364 (or 504362 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 41.

The square root of 74639804 is about 8639.4330832526. The cubic root of 74639804 is about 421.0401354943.

The spelling of 74639804 in words is "seventy-four million, six hundred thirty-nine thousand, eight hundred four".