74631620 has 48 divisors (see below), whose sum is σ = 188549760. Its totient is φ = 24240384.

The previous prime is 74631607. The next prime is 74631631. The reversal of 74631620 is 2613647.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11369 + ... + 16688.

It is an arithmetic number, because the mean of its divisors is an integer number (3928120).

Almost surely, 2^74631620 is an apocalyptic number.

74631620 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

74631620 is an abundant number, since it is smaller than the sum of its proper divisors (113918140).

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

74631620 is a wasteful number, since it uses less digits than its factorization.

74631620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28092 (or 28090 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 29.

The square root of 74631620 is about 8638.9594280793. The cubic root of 74631620 is about 421.0247463934.

The spelling of 74631620 in words is "seventy-four million, six hundred thirty-one thousand, six hundred twenty".