7691664 has 20 divisors (see below), whose sum is σ = 19870256. Its totient is φ = 2563872.

The previous prime is 7691659. The next prime is 7691669. The reversal of 7691664 is 4661967.

It is an interprime number because it is at equal distance from previous prime (7691659) and next prime (7691669).

It is not an unprimeable number, because it can be changed into a prime (7691669) 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, 80074 + ... + 80169.

Almost surely, 2^7691664 is an apocalyptic number.

It is an amenable number.

7691664 is an abundant number, since it is smaller than the sum of its proper divisors (12178592).

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

7691664 is a wasteful number, since it uses less digits than its factorization.

7691664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160254 (or 160248 counting only the distinct ones).

The product of its digits is 54432, while the sum is 39.

The square root of 7691664 is about 2773.3849354174. The cubic root of 7691664 is about 197.3967970130.

The spelling of 7691664 in words is "seven million, six hundred ninety-one thousand, six hundred sixty-four".