868279824 has 70 divisors (see below), whose sum is σ = 2522318286. Its totient is φ = 289422720.

The previous prime is 868279799. The next prime is 868279829. The reversal of 868279824 is 428972868.

It can be written as a sum of positive squares in only one way, i.e., 569681424 + 298598400 = 23868^2 + 17280^2 .

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

It is not an unprimeable number, because it can be changed into a prime (868279829) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 25557 + ... + 48884.

Almost surely, 2^868279824 is an apocalyptic number.

It is an amenable number.

868279824 is an abundant number, since it is smaller than the sum of its proper divisors (1654038462).

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

868279824 is an equidigital number, since it uses as much as digits as its factorization.

868279824 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74467 (or 74446 counting only the distinct ones).

The product of its digits is 3096576, while the sum is 54.

The square root of 868279824 is about 29466.5882653557. The cubic root of 868279824 is about 954.0106798377.

The spelling of 868279824 in words is "eight hundred sixty-eight million, two hundred seventy-nine thousand, eight hundred twenty-four".