782738868 has 12 divisors (see below), whose sum is σ = 1826390720. Its totient is φ = 260912952.

The previous prime is 782738849. The next prime is 782738941. The reversal of 782738868 is 868837287.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×782738868² = 1225360270955842848, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32614108 + ... + 32614131.

Almost surely, 2^782738868 is an apocalyptic number.

It is an amenable number.

782738868 is an abundant number, since it is smaller than the sum of its proper divisors (1043651852).

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

782738868 is a wasteful number, since it uses less digits than its factorization.

782738868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65228246 (or 65228244 counting only the distinct ones).

The product of its digits is 7225344, while the sum is 57.

The square root of 782738868 is about 27977.4707219934. The cubic root of 782738868 is about 921.5925739585.

The spelling of 782738868 in words is "seven hundred eighty-two million, seven hundred thirty-eight thousand, eight hundred sixty-eight".