74637642 has 8 divisors (see below), whose sum is σ = 149275296. Its totient is φ = 24879212.

The previous prime is 74637631. The next prime is 74637649. The reversal of 74637642 is 24673647.

It is a sphenic number, since it is the product of 3 distinct primes.

74637642 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 74637642.

It is not an unprimeable number, because it can be changed into a prime (74637649) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6219798 + ... + 6219809.

It is an arithmetic number, because the mean of its divisors is an integer number (18659412).

Almost surely, 2^74637642 is an apocalyptic number.

74637642 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

74637642 is a wasteful number, since it uses less digits than its factorization.

74637642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12439612.

The product of its digits is 169344, while the sum is 39.

The square root of 74637642 is about 8639.3079583957. The cubic root of 74637642 is about 421.0360702033.

The spelling of 74637642 in words is "seventy-four million, six hundred thirty-seven thousand, six hundred forty-two".