7315668 has 18 divisors (see below), whose sum is σ = 18492474. Its totient is φ = 2438544.

The previous prime is 7315667. The next prime is 7315673. The reversal of 7315668 is 8665137.

7315668 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 5846724 + 1468944 = 2418^2 + 1212^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 203213 = 7315668 / (7 + 3 + 1 + 5 + 6 + 6 + 8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7315667) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 101571 + ... + 101642.

Almost surely, 2^7315668 is an apocalyptic number.

It is an amenable number.

7315668 is an abundant number, since it is smaller than the sum of its proper divisors (11176806).

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

7315668 is a wasteful number, since it uses less digits than its factorization.

7315668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203223 (or 203218 counting only the distinct ones).

The product of its digits is 30240, while the sum is 36.

The square root of 7315668 is about 2704.7491565763. The cubic root of 7315668 is about 194.1264276696.

The spelling of 7315668 in words is "seven million, three hundred fifteen thousand, six hundred sixty-eight".