686466418 has 64 divisors (see below), whose sum is σ = 1224253440. Its totient is φ = 285436800.

The previous prime is 686466401. The next prime is 686466419. The reversal of 686466418 is 814664686.

686466418 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×686466418² = 942472286083501448, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (686466419) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1678198 + ... + 1678606.

It is an arithmetic number, because the mean of its divisors is an integer number (19128960).

Almost surely, 2^686466418 is an apocalyptic number.

686466418 is a deficient number, since it is larger than the sum of its proper divisors (537787022).

686466418 is a wasteful number, since it uses less digits than its factorization.

686466418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 583.

The product of its digits is 1327104, while the sum is 49.

The square root of 686466418 is about 26200.5041554547. The cubic root of 686466418 is about 882.1445705467.

The spelling of 686466418 in words is "six hundred eighty-six million, four hundred sixty-six thousand, four hundred eighteen".