74621680 has 40 divisors (see below), whose sum is σ = 198281952. Its totient is φ = 25584384.

The previous prime is 74621671. The next prime is 74621707. The reversal of 74621680 is 8612647.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66067 + ... + 67186.

Almost surely, 2^74621680 is an apocalyptic number.

74621680 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

74621680 is an abundant number, since it is smaller than the sum of its proper divisors (123660272).

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

74621680 is a wasteful number, since it uses less digits than its factorization.

74621680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133273 (or 133267 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 74621680 is about 8638.3841081536. The cubic root of 74621680 is about 421.0060538170.

The spelling of 74621680 in words is "seventy-four million, six hundred twenty-one thousand, six hundred eighty".