861935264 has 12 divisors (see below), whose sum is σ = 1696935114. Its totient is φ = 430967616.

The previous prime is 861935233. The next prime is 861935287. The reversal of 861935264 is 462539168.

It can be written as a sum of positive squares in only one way, i.e., 745726864 + 116208400 = 27308^2 + 10780^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13467707 + ... + 13467770.

Almost surely, 2^861935264 is an apocalyptic number.

It is an amenable number.

861935264 is a deficient number, since it is larger than the sum of its proper divisors (834999850).

861935264 is a wasteful number, since it uses less digits than its factorization.

861935264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26935487 (or 26935479 counting only the distinct ones).

The product of its digits is 311040, while the sum is 44.

The square root of 861935264 is about 29358.7340326520. The cubic root of 861935264 is about 951.6813306223.

The spelling of 861935264 in words is "eight hundred sixty-one million, nine hundred thirty-five thousand, two hundred sixty-four".