74364642 has 80 divisors (see below), whose sum is σ = 188179200. Its totient is φ = 21742560.

The previous prime is 74364623. The next prime is 74364643. The reversal of 74364642 is 24646347.

74364642 is a `hidden beast` number, since 7 + 4 + 3 + 6 + 4 + 642 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 74364597 and 74364606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74364643) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 50959 + ... + 52397.

It is an arithmetic number, because the mean of its divisors is an integer number (2352240).

Almost surely, 2^74364642 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 74364642, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94089600).

74364642 is an abundant number, since it is smaller than the sum of its proper divisors (113814558).

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

74364642 is a wasteful number, since it uses less digits than its factorization.

74364642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1493 (or 1484 counting only the distinct ones).

The product of its digits is 96768, while the sum is 36.

The square root of 74364642 is about 8623.4936075816. The cubic root of 74364642 is about 420.5221057987.

The spelling of 74364642 in words is "seventy-four million, three hundred sixty-four thousand, six hundred forty-two".