74818656 has 216 divisors, whose sum is σ = 248353560. Its totient is φ = 21288960.

The previous prime is 74818633. The next prime is 74818661. The reversal of 74818656 is 65681847.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 662056 + ... + 662168.

It is an arithmetic number, because the mean of its divisors is an integer number (1149785).

Almost surely, 2^74818656 is an apocalyptic number.

74818656 is a gapful number since it is divisible by the number (76) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 74818656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (124176780).

74818656 is an abundant number, since it is smaller than the sum of its proper divisors (173534904).

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

74818656 is a wasteful number, since it uses less digits than its factorization.

74818656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170 (or 148 counting only the distinct ones).

The product of its digits is 322560, while the sum is 45.

The square root of 74818656 is about 8649.7778006143. Note that the first 3 decimals coincide. The cubic root of 74818656 is about 421.3761662200.

The spelling of 74818656 in words is "seventy-four million, eight hundred eighteen thousand, six hundred fifty-six".