8631661368 has 32 divisors (see below), whose sum is σ = 23540895360. Its totient is φ = 2615654880.

The previous prime is 8631661361. The next prime is 8631661369.

8631661368 is nontrivially palindromic in base 10.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8631661361) 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, 16347580 + ... + 16348107.

It is an arithmetic number, because the mean of its divisors is an integer number (735652980).

Almost surely, 2^8631661368 is an apocalyptic number.

8631661368 is a gapful number since it is divisible by the number (88) formed by its first and last digit.

It is an amenable number.

8631661368 is an abundant number, since it is smaller than the sum of its proper divisors (14909233992).

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

8631661368 is a wasteful number, since it uses less digits than its factorization.

8631661368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32695707 (or 32695703 counting only the distinct ones).

The product of its digits is 746496, while the sum is 48.

The square root of 8631661368 is about 92906.7347827917. The cubic root of 8631661368 is about 2051.3107911150.

The spelling of 8631661368 in words is "eight billion, six hundred thirty-one million, six hundred sixty-one thousand, three hundred sixty-eight".