864696540 has 24 divisors (see below), whose sum is σ = 2421150480. Its totient is φ = 230585728.

The previous prime is 864696527. The next prime is 864696541. The reversal of 864696540 is 45696468.

It is a happy number.

864696540 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 864696540.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (864696541) 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, 7205745 + ... + 7205864.

It is an arithmetic number, because the mean of its divisors is an integer number (100881270).

Almost surely, 2^864696540 is an apocalyptic number.

It is an amenable number.

864696540 is an abundant number, since it is smaller than the sum of its proper divisors (1556453940).

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

864696540 is a wasteful number, since it uses less digits than its factorization.

864696540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14411621 (or 14411619 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 48.

The square root of 864696540 is about 29405.7229123856. The cubic root of 864696540 is about 952.6965088044.

The spelling of 864696540 in words is "eight hundred sixty-four million, six hundred ninety-six thousand, five hundred forty".