686896454 has 16 divisors (see below), whose sum is σ = 1035342000. Its totient is φ = 341787360.

The previous prime is 686896421. The next prime is 686896471. The reversal of 686896454 is 454698686.

It is a self number, because there is not a number n which added to its sum of digits gives 686896454.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 459332 + ... + 460824.

It is an arithmetic number, because the mean of its divisors is an integer number (64708875).

Almost surely, 2^686896454 is an apocalyptic number.

686896454 is a deficient number, since it is larger than the sum of its proper divisors (348445546).

686896454 is a wasteful number, since it uses less digits than its factorization.

686896454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2455.

The product of its digits is 9953280, while the sum is 56.

The square root of 686896454 is about 26208.7095065743. The cubic root of 686896454 is about 882.3287382034.

The spelling of 686896454 in words is "six hundred eighty-six million, eight hundred ninety-six thousand, four hundred fifty-four".