74656816 has 40 divisors (see below), whose sum is σ = 156871904. Its totient is φ = 34214400.

The previous prime is 74656811. The next prime is 74656847. The reversal of 74656816 is 61865647.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (74656811) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 30220 + ... + 32596.

Almost surely, 2^74656816 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 74656816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78435952).

74656816 is an abundant number, since it is smaller than the sum of its proper divisors (82215088).

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

74656816 is a wasteful number, since it uses less digits than its factorization.

74656816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2549 (or 2543 counting only the distinct ones).

The product of its digits is 241920, while the sum is 43.

The square root of 74656816 is about 8640.4175825014. The cubic root of 74656816 is about 421.0721210672.

The spelling of 74656816 in words is "seventy-four million, six hundred fifty-six thousand, eight hundred sixteen".