8631340 has 12 divisors (see below), whose sum is σ = 18125856. Its totient is φ = 3452528.

The previous prime is 8631331. The next prime is 8631341. The reversal of 8631340 is 431368.

It is not an unprimeable number, because it can be changed into a prime (8631341) 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, 215764 + ... + 215803.

It is an arithmetic number, because the mean of its divisors is an integer number (1510488).

Almost surely, 2^8631340 is an apocalyptic number.

It is an amenable number.

8631340 is an abundant number, since it is smaller than the sum of its proper divisors (9494516).

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

8631340 is a wasteful number, since it uses less digits than its factorization.

8631340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 431576 (or 431574 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 8631340 is about 2937.9142261135. The cubic root of 8631340 is about 205.1285333141.

The spelling of 8631340 in words is "eight million, six hundred thirty-one thousand, three hundred forty".