74646540 has 36 divisors (see below), whose sum is σ = 226428384. Its totient is φ = 19905696.

The previous prime is 74646529. The next prime is 74646577. The reversal of 74646540 is 4564647.

74646540 is a `hidden beast` number, since 7 + 4 + 646 + 5 + 4 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 74646495 and 74646504.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 207172 + ... + 207531.

Almost surely, 2^74646540 is an apocalyptic number.

It is an amenable number.

74646540 is an abundant number, since it is smaller than the sum of its proper divisors (151781844).

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

74646540 is a wasteful number, since it uses less digits than its factorization.

74646540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 414718 (or 414713 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 36.

The square root of 74646540 is about 8639.8229148519. The cubic root of 74646540 is about 421.0528009484.

The spelling of 74646540 in words is "seventy-four million, six hundred forty-six thousand, five hundred forty".