74640677400 has 72 divisors (see below), whose sum is σ = 250668280980. Its totient is φ = 19904180160.

The previous prime is 74640677383. The next prime is 74640677453. The reversal of 74640677400 is 477604647.

It is a tau number, because it is divible by the number of its divisors (72).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 20731722 + ... + 20735321.

Almost surely, 2^74640677400 is an apocalyptic number.

It is an amenable number.

74640677400 is an abundant number, since it is smaller than the sum of its proper divisors (176027603580).

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

74640677400 is a wasteful number, since it uses less digits than its factorization.

74640677400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41467065 (or 41467053 counting only the distinct ones).

The product of its (nonzero) digits is 790272, while the sum is 45.

The spelling of 74640677400 in words is "seventy-four billion, six hundred forty million, six hundred seventy-seven thousand, four hundred".