8631983 has 6 divisors (see below), whose sum is σ = 8715672. Its totient is φ = 8549060.

The previous prime is 8631979. The next prime is 8632003. The reversal of 8631983 is 3891368.

It is not a de Polignac number, because 8631983 - 2² = 8631979 is a prime.

It is a super-2 number, since 2×8631983² = 149022261024578, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8631943) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 16910 + ... + 17412.

It is an arithmetic number, because the mean of its divisors is an integer number (1452612).

Almost surely, 2^8631983 is an apocalyptic number.

8631983 is a deficient number, since it is larger than the sum of its proper divisors (83689).

8631983 is an equidigital number, since it uses as much as digits as its factorization.

8631983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 765 (or 634 counting only the distinct ones).

The product of its digits is 31104, while the sum is 38.

The square root of 8631983 is about 2938.0236554528. The cubic root of 8631983 is about 205.1336269370.

The spelling of 8631983 in words is "eight million, six hundred thirty-one thousand, nine hundred eighty-three".