685104054 has 32 divisors (see below), whose sum is σ = 1422337536. Its totient is φ = 219839520.

The previous prime is 685103981. The next prime is 685104107. The reversal of 685104054 is 450401586.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2712 + ... + 37115.

It is an arithmetic number, because the mean of its divisors is an integer number (44448048).

Almost surely, 2^685104054 is an apocalyptic number.

685104054 is an abundant number, since it is smaller than the sum of its proper divisors (737233482).

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

685104054 is a wasteful number, since it uses less digits than its factorization.

685104054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39940.

The product of its (nonzero) digits is 19200, while the sum is 33.

The square root of 685104054 is about 26174.4924306089. The cubic root of 685104054 is about 881.5606148544.

The spelling of 685104054 in words is "six hundred eighty-five million, one hundred four thousand, fifty-four".