864781464 has 32 divisors (see below), whose sum is σ = 2220387120. Its totient is φ = 280469376.

The previous prime is 864781457. The next prime is 864781499. The reversal of 864781464 is 464187468.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 486039 + ... + 487814.

Almost surely, 2^864781464 is an apocalyptic number.

It is an amenable number.

864781464 is an abundant number, since it is smaller than the sum of its proper divisors (1355605656).

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

864781464 is a wasteful number, since it uses less digits than its factorization.

864781464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 973899 (or 973895 counting only the distinct ones).

The product of its digits is 1032192, while the sum is 48.

The square root of 864781464 is about 29407.1668815614. The cubic root of 864781464 is about 952.7276966821.

The spelling of 864781464 in words is "eight hundred sixty-four million, seven hundred eighty-one thousand, four hundred sixty-four".