7665980 has 48 divisors (see below), whose sum is σ = 19486656. Its totient is φ = 2472960.

The previous prime is 7665979. The next prime is 7666003. The reversal of 7665980 is 895667.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 770 + ... + 3990.

It is an arithmetic number, because the mean of its divisors is an integer number (405972).

Almost surely, 2^7665980 is an apocalyptic number.

7665980 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7665980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9743328).

7665980 is an abundant number, since it is smaller than the sum of its proper divisors (11820676).

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

7665980 is a wasteful number, since it uses less digits than its factorization.

7665980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3254 (or 3252 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 41.

The square root of 7665980 is about 2768.7506207674. The cubic root of 7665980 is about 197.1768362431.

The spelling of 7665980 in words is "seven million, six hundred sixty-five thousand, nine hundred eighty".