685608774 has 8 divisors (see below), whose sum is σ = 1371217560. Its totient is φ = 228536256.

The previous prime is 685608769. The next prime is 685608821. The reversal of 685608774 is 477806586.

It is a sphenic number, since it is the product of 3 distinct primes.

685608774 is an admirable number.

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, 57134059 + ... + 57134070.

It is an arithmetic number, because the mean of its divisors is an integer number (171402195).

Almost surely, 2^685608774 is an apocalyptic number.

685608774 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

685608774 is a wasteful number, since it uses less digits than its factorization.

685608774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114268134.

The product of its (nonzero) digits is 2257920, while the sum is 51.

The square root of 685608774 is about 26184.1321032415. The cubic root of 685608774 is about 881.7770452647. Note that the first 3 decimals are identical.

The spelling of 685608774 in words is "six hundred eighty-five million, six hundred eight thousand, seven hundred seventy-four".