1685322656 has 12 divisors (see below), whose sum is σ = 3317979042. Its totient is φ = 842661312.

The previous prime is 1685322647. The next prime is 1685322679. The reversal of 1685322656 is 6562235861.

It can be written as a sum of positive squares in only one way, i.e., 1095610000 + 589712656 = 33100^2 + 24284^2 .

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

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, 26333135 + ... + 26333198.

Almost surely, 2^1685322656 is an apocalyptic number.

1685322656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1685322656 is a deficient number, since it is larger than the sum of its proper divisors (1632656386).

1685322656 is an equidigital number, since it uses as much as digits as its factorization.

1685322656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52666343 (or 52666335 counting only the distinct ones).

The product of its digits is 518400, while the sum is 44.

The square root of 1685322656 is about 41052.6814714946. The cubic root of 1685322656 is about 1190.0385214562.

The spelling of 1685322656 in words is "one billion, six hundred eighty-five million, three hundred twenty-two thousand, six hundred fifty-six".