685559796 has 12 divisors (see below), whose sum is σ = 1599639552. Its totient is φ = 228519928.

The previous prime is 685559773. The next prime is 685559837. The reversal of 685559796 is 697955586.

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

It is a super-3 number, since 3×685559796³ (a number of 27 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28564980 + ... + 28565003.

It is an arithmetic number, because the mean of its divisors is an integer number (133303296).

Almost surely, 2^685559796 is an apocalyptic number.

It is an amenable number.

685559796 is an abundant number, since it is smaller than the sum of its proper divisors (914079756).

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

685559796 is a wasteful number, since it uses less digits than its factorization.

685559796 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57129990 (or 57129988 counting only the distinct ones).

The product of its digits is 20412000, while the sum is 60.

The square root of 685559796 is about 26183.1968254451. The cubic root of 685559796 is about 881.7560475246.

The spelling of 685559796 in words is "six hundred eighty-five million, five hundred fifty-nine thousand, seven hundred ninety-six".