685350554 has 24 divisors (see below), whose sum is σ = 1197870048. Its totient is φ = 293229720.

The previous prime is 685350553. The next prime is 685350581. The reversal of 685350554 is 455053586.

It is not an unprimeable number, because it can be changed into a prime (685350553) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 56297 + ... + 67379.

It is an arithmetic number, because the mean of its divisors is an integer number (49911252).

Almost surely, 2^685350554 is an apocalyptic number.

685350554 is a deficient number, since it is larger than the sum of its proper divisors (512519494).

685350554 is a wasteful number, since it uses less digits than its factorization.

685350554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11730 (or 11723 counting only the distinct ones).

The product of its (nonzero) digits is 360000, while the sum is 41.

The square root of 685350554 is about 26179.2007899401. The cubic root of 685350554 is about 881.6663304915. Note that the first 3 decimals are identical.

The spelling of 685350554 in words is "six hundred eighty-five million, three hundred fifty thousand, five hundred fifty-four".