686390466 has 16 divisors (see below), whose sum is σ = 1445032800. Its totient is φ = 216754848.

The previous prime is 686390461. The next prime is 686390489. The reversal of 686390466 is 664093686.

686390466 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 2×686390466² = 942263743631394312, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (686390461) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3010371 + ... + 3010598.

It is an arithmetic number, because the mean of its divisors is an integer number (90314550).

Almost surely, 2^686390466 is an apocalyptic number.

686390466 is an abundant number, since it is smaller than the sum of its proper divisors (758642334).

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

686390466 is a wasteful number, since it uses less digits than its factorization.

686390466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6020993.

The product of its (nonzero) digits is 1119744, while the sum is 48.

The square root of 686390466 is about 26199.0546776024. The cubic root of 686390466 is about 882.1120352743.

The spelling of 686390466 in words is "six hundred eighty-six million, three hundred ninety thousand, four hundred sixty-six".