686654452 has 48 divisors (see below), whose sum is σ = 1388620800. Its totient is φ = 293816160.

The previous prime is 686654411. The next prime is 686654453. The reversal of 686654452 is 254456686.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (686654453) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 133749 + ... + 138787.

It is an arithmetic number, because the mean of its divisors is an integer number (28929600).

Almost surely, 2^686654452 is an apocalyptic number.

It is an amenable number.

686654452 is an abundant number, since it is smaller than the sum of its proper divisors (701966348).

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

686654452 is a wasteful number, since it uses less digits than its factorization.

686654452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5236 (or 5234 counting only the distinct ones).

The product of its digits is 1382400, while the sum is 46.

The square root of 686654452 is about 26204.0922758259. The cubic root of 686654452 is about 882.2251076398.

The spelling of 686654452 in words is "six hundred eighty-six million, six hundred fifty-four thousand, four hundred fifty-two".