7797980 has 24 divisors (see below), whose sum is σ = 17238480. Its totient is φ = 2954880.

The previous prime is 7797953. The next prime is 7797983. The reversal of 7797980 is 897977.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7797983) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9881 + ... + 10640.

It is an arithmetic number, because the mean of its divisors is an integer number (718270).

Almost surely, 2^7797980 is an apocalyptic number.

It is an amenable number.

7797980 is an abundant number, since it is smaller than the sum of its proper divisors (9440500).

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

7797980 is a wasteful number, since it uses less digits than its factorization.

7797980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20549 (or 20547 counting only the distinct ones).

The product of its (nonzero) digits is 222264, while the sum is 47.

The square root of 7797980 is about 2792.4863473256. The cubic root of 7797980 is about 198.3021269233.

The spelling of 7797980 in words is "seven million, seven hundred ninety-seven thousand, nine hundred eighty".