863906772 has 24 divisors (see below), whose sum is σ = 2103425856. Its totient is φ = 275448448.

The previous prime is 863906759. The next prime is 863906779. The reversal of 863906772 is 277609368.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (863906779) 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, 1564773 + ... + 1565324.

It is an arithmetic number, because the mean of its divisors is an integer number (87642744).

Almost surely, 2^863906772 is an apocalyptic number.

It is an amenable number.

863906772 is an abundant number, since it is smaller than the sum of its proper divisors (1239519084).

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

863906772 is a wasteful number, since it uses less digits than its factorization.

863906772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3130127 (or 3130125 counting only the distinct ones).

The product of its (nonzero) digits is 762048, while the sum is 48.

The square root of 863906772 is about 29392.2910301324. The cubic root of 863906772 is about 952.4063729521.

The spelling of 863906772 in words is "eight hundred sixty-three million, nine hundred six thousand, seven hundred seventy-two".