685870754 has 8 divisors (see below), whose sum is σ = 1030034880. Its totient is φ = 342525796.

The previous prime is 685870747. The next prime is 685870771. The reversal of 685870754 is 457078586.

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

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 3 ways as a sum of consecutive naturals, for example, 202694 + ... + 206049.

It is an arithmetic number, because the mean of its divisors is an integer number (128754360).

Almost surely, 2^685870754 is an apocalyptic number.

685870754 is a deficient number, since it is larger than the sum of its proper divisors (344164126).

685870754 is a wasteful number, since it uses less digits than its factorization.

685870754 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 409584.

The product of its (nonzero) digits is 1881600, while the sum is 50.

The square root of 685870754 is about 26189.1342735876. The cubic root of 685870754 is about 881.8893437755.

The spelling of 685870754 in words is "six hundred eighty-five million, eight hundred seventy thousand, seven hundred fifty-four".