8631703661 has 8 divisors (see below), whose sum is σ = 10003745664. Its totient is φ = 7294397040.

The previous prime is 8631703657. The next prime is 8631703669. The reversal of 8631703661 is 1663071368.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 8631703661 - 2² = 8631703657 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8631703669) 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, 8683310 + ... + 8684303.

It is an arithmetic number, because the mean of its divisors is an integer number (1250468208).

Almost surely, 2^8631703661 is an apocalyptic number.

It is an amenable number.

8631703661 is a deficient number, since it is larger than the sum of its proper divisors (1372042003).

8631703661 is a wasteful number, since it uses less digits than its factorization.

8631703661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17367691.

The product of its (nonzero) digits is 108864, while the sum is 41.

The square root of 8631703661 is about 92906.9623924924. The cubic root of 8631703661 is about 2051.3141414142.

The spelling of 8631703661 in words is "eight billion, six hundred thirty-one million, seven hundred three thousand, six hundred sixty-one".