685983670 has 8 divisors (see below), whose sum is σ = 1234770624. Its totient is φ = 274393464.

The previous prime is 685983653. The next prime is 685983679. The reversal of 685983670 is 76389586.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (685983679) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34299174 + ... + 34299193.

It is an arithmetic number, because the mean of its divisors is an integer number (154346328).

Almost surely, 2^685983670 is an apocalyptic number.

685983670 is a deficient number, since it is larger than the sum of its proper divisors (548786954).

685983670 is a wasteful number, since it uses less digits than its factorization.

685983670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68598374.

The product of its (nonzero) digits is 2177280, while the sum is 52.

The square root of 685983670 is about 26191.2899644137. The cubic root of 685983670 is about 881.9377367380.

The spelling of 685983670 in words is "six hundred eighty-five million, nine hundred eighty-three thousand, six hundred seventy".