74768856 has 64 divisors (see below), whose sum is σ = 198845280. Its totient is φ = 23347200.

The previous prime is 74768843. The next prime is 74768867. The reversal of 74768856 is 65886747.

74768856 = 216² + 217² + ... + 616².

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a junction number, because it is equal to n+sod(n) for n = 74768799 and 74768808.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 163380 + ... + 163836.

Almost surely, 2^74768856 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 74768856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99422640).

74768856 is an abundant number, since it is smaller than the sum of its proper divisors (124076424).

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

74768856 is a wasteful number, since it uses less digits than its factorization.

74768856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 884 (or 880 counting only the distinct ones).

The product of its digits is 2257920, while the sum is 51.

The square root of 74768856 is about 8646.8986347707. The cubic root of 74768856 is about 421.2826548252.

The spelling of 74768856 in words is "seventy-four million, seven hundred sixty-eight thousand, eight hundred fifty-six".