861652368 has 60 divisors (see below), whose sum is σ = 2441986560. Its totient is φ = 283578048.

The previous prime is 861652367. The next prime is 861652397. The reversal of 861652368 is 863256168.

861652368 is a `hidden beast` number, since 8 + 61 + 6 + 523 + 68 = 666.

861652368 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (861652367) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26496 + ... + 49247.

It is an arithmetic number, because the mean of its divisors is an integer number (40699776).

Almost surely, 2^861652368 is an apocalyptic number.

It is an amenable number.

861652368 is an abundant number, since it is smaller than the sum of its proper divisors (1580334192).

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

861652368 is a wasteful number, since it uses less digits than its factorization.

861652368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75836 (or 75827 counting only the distinct ones).

The product of its digits is 414720, while the sum is 45.

The square root of 861652368 is about 29353.9157183501. The cubic root of 861652368 is about 951.5772020361.

The spelling of 861652368 in words is "eight hundred sixty-one million, six hundred fifty-two thousand, three hundred sixty-eight".