7391664 has 60 divisors (see below), whose sum is σ = 23644816. Its totient is φ = 2111616.

The previous prime is 7391663. The next prime is 7391689. The reversal of 7391664 is 4661937.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (7391663) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2659 + ... + 4674.

Almost surely, 2^7391664 is an apocalyptic number.

It is an amenable number.

7391664 is an abundant number, since it is smaller than the sum of its proper divisors (16253152).

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

7391664 is a wasteful number, since it uses less digits than its factorization.

7391664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7354 (or 7345 counting only the distinct ones).

The product of its digits is 27216, while the sum is 36.

The square root of 7391664 is about 2718.7614827344. The cubic root of 7391664 is about 194.7963159188.

The spelling of 7391664 in words is "seven million, three hundred ninety-one thousand, six hundred sixty-four".