7665616 has 20 divisors (see below), whose sum is σ = 16974112. Its totient is φ = 3285216.

The previous prime is 7665613. The next prime is 7665641. The reversal of 7665616 is 6165667.

It is a happy number.

It is a super-3 number, since 3×7665616³ (a number of 22 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7665613) 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, 34110 + ... + 34333.

Almost surely, 2^7665616 is an apocalyptic number.

It is an amenable number.

7665616 is an abundant number, since it is smaller than the sum of its proper divisors (9308496).

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

7665616 is a wasteful number, since it uses less digits than its factorization.

7665616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68458 (or 68452 counting only the distinct ones).

The product of its digits is 45360, while the sum is 37.

The square root of 7665616 is about 2768.6848863675. The cubic root of 7665616 is about 197.1737153764.

It can be divided in two parts, 7665 and 616, that added together give a square (8281 = 91²).

The spelling of 7665616 in words is "seven million, six hundred sixty-five thousand, six hundred sixteen".