8631980 has 24 divisors (see below), whose sum is σ = 20717088. Its totient is φ = 2959488.

The previous prime is 8631979. The next prime is 8632003. The reversal of 8631980 is 891368.

8631980 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×8631980² = 149022157440800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 8631980.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30689 + ... + 30968.

It is an arithmetic number, because the mean of its divisors is an integer number (863212).

Almost surely, 2^8631980 is an apocalyptic number.

It is an amenable number.

8631980 is an abundant number, since it is smaller than the sum of its proper divisors (12085108).

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

8631980 is a wasteful number, since it uses less digits than its factorization.

8631980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61673 (or 61671 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 35.

The square root of 8631980 is about 2938.0231449054. The cubic root of 8631980 is about 205.1336031726.

The spelling of 8631980 in words is "eight million, six hundred thirty-one thousand, nine hundred eighty".