7423664 has 20 divisors (see below), whose sum is σ = 15009456. Its totient is φ = 3550272.

The previous prime is 7423631. The next prime is 7423673. The reversal of 7423664 is 4663247.

It is a super-2 number, since 2×7423664² = 110221574369792, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 7423664.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9719 + ... + 10454.

Almost surely, 2^7423664 is an apocalyptic number.

It is an amenable number.

7423664 is an abundant number, since it is smaller than the sum of its proper divisors (7585792).

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

7423664 is a wasteful number, since it uses less digits than its factorization.

7423664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20204 (or 20198 counting only the distinct ones).

The product of its digits is 24192, while the sum is 32.

The square root of 7423664 is about 2724.6401597275. The cubic root of 7423664 is about 195.0770153819.

The spelling of 7423664 in words is "seven million, four hundred twenty-three thousand, six hundred sixty-four".