8687683440 has 120 divisors (see below), whose sum is σ = 29654584128. Its totient is φ = 2278725120.

The previous prime is 8687683393. The next prime is 8687683453. The reversal of 8687683440 is 443867868.

It is a tau number, because it is divible by the number of its divisors (120).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 54984 + ... + 142823.

Almost surely, 2^8687683440 is an apocalyptic number.

8687683440 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

8687683440 is an abundant number, since it is smaller than the sum of its proper divisors (20966900688).

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

8687683440 is a wasteful number, since it uses less digits than its factorization.

8687683440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197887 (or 197878 counting only the distinct ones).

The product of its (nonzero) digits is 6193152, while the sum is 54.

The square root of 8687683440 is about 93207.7434551443. The cubic root of 8687683440 is about 2055.7390986999.

The spelling of 8687683440 in words is "eight billion, six hundred eighty-seven million, six hundred eighty-three thousand, four hundred forty".