7442664 has 16 divisors (see below), whose sum is σ = 18606720. Its totient is φ = 2480880.

The previous prime is 7442663. The next prime is 7442681. The reversal of 7442664 is 4662447.

It is not an unprimeable number, because it can be changed into a prime (7442663) 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, 155032 + ... + 155079.

It is an arithmetic number, because the mean of its divisors is an integer number (1162920).

Almost surely, 2^7442664 is an apocalyptic number.

It is an amenable number.

7442664 is an abundant number, since it is smaller than the sum of its proper divisors (11164056).

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

7442664 is a wasteful number, since it uses less digits than its factorization.

7442664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310120 (or 310116 counting only the distinct ones).

The product of its digits is 32256, while the sum is 33.

The square root of 7442664 is about 2728.1246305842. The cubic root of 7442664 is about 195.2432992050.

The spelling of 7442664 in words is "seven million, four hundred forty-two thousand, six hundred sixty-four".