686477458 has 16 divisors (see below), whose sum is σ = 1075553280. Its totient is φ = 327989376.

The previous prime is 686477443. The next prime is 686477489. The reversal of 686477458 is 854774686.

It is a junction number, because it is equal to n+sod(n) for n = 686477399 and 686477408.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43138 + ... + 56866.

It is an arithmetic number, because the mean of its divisors is an integer number (67222080).

Almost surely, 2^686477458 is an apocalyptic number.

686477458 is a deficient number, since it is larger than the sum of its proper divisors (389075822).

686477458 is a wasteful number, since it uses less digits than its factorization.

686477458 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14841.

The product of its digits is 9031680, while the sum is 55.

The square root of 686477458 is about 26200.7148375765. The cubic root of 686477458 is about 882.1492995102.

The spelling of 686477458 in words is "six hundred eighty-six million, four hundred seventy-seven thousand, four hundred fifty-eight".