685211942 has 16 divisors (see below), whose sum is σ = 1066338000. Its totient is φ = 329834400.

The previous prime is 685211921. The next prime is 685211957. The reversal of 685211942 is 249112586.

It is a super-2 number, since 2×685211942² = 939030810918822728, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 685211896 and 685211905.

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, 3317 + ... + 37167.

It is an arithmetic number, because the mean of its divisors is an integer number (66646125).

Almost surely, 2^685211942 is an apocalyptic number.

685211942 is a deficient number, since it is larger than the sum of its proper divisors (381126058).

685211942 is a wasteful number, since it uses less digits than its factorization.

685211942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34231.

The product of its digits is 34560, while the sum is 38.

The square root of 685211942 is about 26176.5532872454. The cubic root of 685211942 is about 881.6068875429.

The spelling of 685211942 in words is "six hundred eighty-five million, two hundred eleven thousand, nine hundred forty-two".