74681856 has 120 divisors (see below), whose sum is σ = 227146920. Its totient is φ = 23556096.

The previous prime is 74681807. The next prime is 74681857. The reversal of 74681856 is 65818647.

It is a happy number.

74681856 is a `hidden beast` number, since 7 + 468 + 185 + 6 = 666.

Its product of digits (322560) is a multiple of the sum of its prime factors (896).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74681857) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 87126 + ... + 87978.

It is an arithmetic number, because the mean of its divisors is an integer number (1892891).

Almost surely, 2^74681856 is an apocalyptic number.

74681856 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 74681856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (113573460).

74681856 is an abundant number, since it is smaller than the sum of its proper divisors (152465064).

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

74681856 is a wasteful number, since it uses less digits than its factorization.

74681856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 896 (or 877 counting only the distinct ones).

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

The square root of 74681856 is about 8641.8664650641. The cubic root of 74681856 is about 421.1191918635.

The spelling of 74681856 in words is "seventy-four million, six hundred eighty-one thousand, eight hundred fifty-six".