74445864 has 64 divisors (see below), whose sum is σ = 190850880. Its totient is φ = 24192000.

The previous prime is 74445863. The next prime is 74445881. The reversal of 74445864 is 46854447.

It is not an unprimeable number, because it can be changed into a prime (74445863) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 308784 + ... + 309024.

It is an arithmetic number, because the mean of its divisors is an integer number (2982045).

Almost surely, 2^74445864 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 74445864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (95425440).

74445864 is an abundant number, since it is smaller than the sum of its proper divisors (116405016).

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

74445864 is a wasteful number, since it uses less digits than its factorization.

74445864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 522 (or 518 counting only the distinct ones).

The product of its digits is 430080, while the sum is 42.

The square root of 74445864 is about 8628.2016666279. The cubic root of 74445864 is about 420.6751499427.

The spelling of 74445864 in words is "seventy-four million, four hundred forty-five thousand, eight hundred sixty-four".