1686000880 has 20 divisors (see below), whose sum is σ = 3919952232. Its totient is φ = 674400320.

The previous prime is 1686000851. The next prime is 1686000881. The reversal of 1686000880 is 880006861.

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1686000881) 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, 10537426 + ... + 10537585.

Almost surely, 2^1686000880 is an apocalyptic number.

1686000880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1686000880 is an abundant number, since it is smaller than the sum of its proper divisors (2233951352).

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

1686000880 is a wasteful number, since it uses less digits than its factorization.

1686000880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21075024 (or 21075018 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 37.

The square root of 1686000880 is about 41060.9410510768. The cubic root of 1686000880 is about 1190.1981356877.

The spelling of 1686000880 in words is "one billion, six hundred eighty-six million, eight hundred eighty", and thus it is an aban number.