685004655 has 16 divisors (see below), whose sum is σ = 1109882880. Its totient is φ = 360710688.

The previous prime is 685004629. The next prime is 685004689. The reversal of 685004655 is 556400586.

It is not a de Polignac number, because 685004655 - 2⁵ = 685004623 is a prime.

It is a super-3 number, since 3×685004655³ (a number of 27 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 287847 + ... + 290216.

It is an arithmetic number, because the mean of its divisors is an integer number (69367680).

Almost surely, 2^685004655 is an apocalyptic number.

685004655 is a deficient number, since it is larger than the sum of its proper divisors (424878225).

685004655 is a wasteful number, since it uses less digits than its factorization.

685004655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 578150.

The product of its (nonzero) digits is 144000, while the sum is 39.

The square root of 685004655 is about 26172.5935856575. The cubic root of 685004655 is about 881.5179787608.

The spelling of 685004655 in words is "six hundred eighty-five million, four thousand, six hundred fifty-five".