74863980 has 48 divisors (see below), whose sum is σ = 232911840. Its totient is φ = 19963584.

The previous prime is 74863973. The next prime is 74863981. The reversal of 74863980 is 8936847.

It is a happy number.

74863980 is a `hidden beast` number, since 7 + 4 + 8 + 639 + 8 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (74863981) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 68779 + ... + 69858.

It is an arithmetic number, because the mean of its divisors is an integer number (4852330).

Almost surely, 2^74863980 is an apocalyptic number.

It is an amenable number.

74863980 is an abundant number, since it is smaller than the sum of its proper divisors (158047860).

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

74863980 is a wasteful number, since it uses less digits than its factorization.

74863980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138655 (or 138647 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The square root of 74863980 is about 8652.3973556466. The cubic root of 74863980 is about 421.4612367944.

The spelling of 74863980 in words is "seventy-four million, eight hundred sixty-three thousand, nine hundred eighty".