782216836 has 6 divisors (see below), whose sum is σ = 1368879470. Its totient is φ = 391108416.

The previous prime is 782216807. The next prime is 782216857. The reversal of 782216836 is 638612287.

It can be written as a sum of positive squares in only one way, i.e., 458216836 + 324000000 = 21406^2 + 18000^2 .

It is a super-2 number, since 2×782216836² = 1223726357043701792, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 782216792 and 782216801.

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 as a sum of consecutive naturals, namely, 97777101 + ... + 97777108.

Almost surely, 2^782216836 is an apocalyptic number.

It is an amenable number.

782216836 is a deficient number, since it is larger than the sum of its proper divisors (586662634).

782216836 is a wasteful number, since it uses less digits than its factorization.

782216836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195554213 (or 195554211 counting only the distinct ones).

The product of its digits is 193536, while the sum is 43.

The square root of 782216836 is about 27968.1396592623. The cubic root of 782216836 is about 921.3876491628.

The spelling of 782216836 in words is "seven hundred eighty-two million, two hundred sixteen thousand, eight hundred thirty-six".