686875146 has 16 divisors (see below), whose sum is σ = 1379649024. Its totient is φ = 227975264.

The previous prime is 686875129. The next prime is 686875159. The reversal of 686875146 is 641578686.

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, 244266 + ... + 247061.

It is an arithmetic number, because the mean of its divisors is an integer number (86228064).

Almost surely, 2^686875146 is an apocalyptic number.

686875146 is an abundant number, since it is smaller than the sum of its proper divisors (692773878).

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

686875146 is a wasteful number, since it uses less digits than its factorization.

686875146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 491565.

The product of its digits is 1935360, while the sum is 51.

The square root of 686875146 is about 26208.3029973327. The cubic root of 686875146 is about 882.3196146278.

The spelling of 686875146 in words is "six hundred eighty-six million, eight hundred seventy-five thousand, one hundred forty-six".