7645668 has 12 divisors (see below), whose sum is σ = 17839920. Its totient is φ = 2548552.

The previous prime is 7645667. The next prime is 7645669. The reversal of 7645668 is 8665467.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (7645667) and next prime (7645669).

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (7645661) 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, 318558 + ... + 318581.

It is an arithmetic number, because the mean of its divisors is an integer number (1486660).

Almost surely, 2^7645668 is an apocalyptic number.

It is an amenable number.

7645668 is an abundant number, since it is smaller than the sum of its proper divisors (10194252).

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

7645668 is a wasteful number, since it uses less digits than its factorization.

7645668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 637146 (or 637144 counting only the distinct ones).

The product of its digits is 241920, while the sum is 42.

The square root of 7645668 is about 2765.0801073387. The cubic root of 7645668 is about 197.0025337439.

The spelling of 7645668 in words is "seven million, six hundred forty-five thousand, six hundred sixty-eight".