74964840 has 32 divisors (see below), whose sum is σ = 224894880. Its totient is φ = 19990592.

The previous prime is 74964829. The next prime is 74964847. The reversal of 74964840 is 4846947.

It is a junction number, because it is equal to n+sod(n) for n = 74964792 and 74964801.

It is not an unprimeable number, because it can be changed into a prime (74964847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 312234 + ... + 312473.

It is an arithmetic number, because the mean of its divisors is an integer number (7027965).

Almost surely, 2^74964840 is an apocalyptic number.

It is an amenable number.

74964840 is an abundant number, since it is smaller than the sum of its proper divisors (149930040).

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

74964840 is a wasteful number, since it uses less digits than its factorization.

74964840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 624721 (or 624717 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 42.

The square root of 74964840 is about 8658.2238363304. The cubic root of 74964840 is about 421.6504221446.

The spelling of 74964840 in words is "seventy-four million, nine hundred sixty-four thousand, eight hundred forty".