686104254 has 48 divisors (see below), whose sum is σ = 1645937280. Its totient is φ = 204803280.

The previous prime is 686104219. The next prime is 686104267. The reversal of 686104254 is 452401686.

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 23 ways as a sum of consecutive naturals, for example, 12594 + ... + 39125.

It is an arithmetic number, because the mean of its divisors is an integer number (34290360).

Almost surely, 2^686104254 is an apocalyptic number.

686104254 is an abundant number, since it is smaller than the sum of its proper divisors (959833026).

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

686104254 is a wasteful number, since it uses less digits than its factorization.

686104254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51805 (or 51802 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 36.

The square root of 686104254 is about 26193.5918499163. The cubic root of 686104254 is about 881.9894101494.

The spelling of 686104254 in words is "six hundred eighty-six million, one hundred four thousand, two hundred fifty-four".