863690688 has 140 divisors (see below), whose sum is σ = 2926122672. Its totient is φ = 246758400.

The previous prime is 863690683. The next prime is 863690699. The reversal of 863690688 is 886096368.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (863690683) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 24388 + ... + 48188.

Almost surely, 2^863690688 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 863690688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1463061336).

863690688 is an abundant number, since it is smaller than the sum of its proper divisors (2062431984).

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

863690688 is a wasteful number, since it uses less digits than its factorization.

863690688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23832 (or 23813 counting only the distinct ones).

The product of its (nonzero) digits is 2985984, while the sum is 54.

The square root of 863690688 is about 29388.6149384417. The cubic root of 863690688 is about 952.3269596997.

The spelling of 863690688 in words is "eight hundred sixty-three million, six hundred ninety thousand, six hundred eighty-eight".