686246454 has 24 divisors (see below), whose sum is σ = 1487453760. Its totient is φ = 228658608.

The previous prime is 686246447. The next prime is 686246471. The reversal of 686246454 is 454642686.

686246454 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 52219 + ... + 64025.

It is an arithmetic number, because the mean of its divisors is an integer number (61977240).

Almost surely, 2^686246454 is an apocalyptic number.

686246454 is an abundant number, since it is smaller than the sum of its proper divisors (801207306).

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

686246454 is a wasteful number, since it uses less digits than its factorization.

686246454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15044 (or 15041 counting only the distinct ones).

The product of its digits is 1105920, while the sum is 45.

The square root of 686246454 is about 26196.3061136489. The cubic root of 686246454 is about 882.0503388056.

It can be divided in two parts, 68624 and 6454, that added together give a triangular number (75078 = T₃₈₇).

The spelling of 686246454 in words is "six hundred eighty-six million, two hundred forty-six thousand, four hundred fifty-four".