863640032 has 24 divisors (see below), whose sum is σ = 1713278952. Its totient is φ = 428521600.

The previous prime is 863640017. The next prime is 863640077. The reversal of 863640032 is 230046368.

863640032 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×863640032² = 1491748209745922048, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 98819 + ... + 107202.

It is an arithmetic number, because the mean of its divisors is an integer number (71386623).

Almost surely, 2^863640032 is an apocalyptic number.

It is an amenable number.

863640032 is a deficient number, since it is larger than the sum of its proper divisors (849638920).

863640032 is a wasteful number, since it uses less digits than its factorization.

863640032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206162 (or 206154 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 32.

The square root of 863640032 is about 29387.7530954648. The cubic root of 863640032 is about 952.3083411448.

The spelling of 863640032 in words is "eight hundred sixty-three million, six hundred forty thousand, thirty-two".