686651146 has 16 divisors (see below), whose sum is σ = 1104645600. Its totient is φ = 319117968.

The previous prime is 686651117. The next prime is 686651159. The reversal of 686651146 is 641156686.

It is a super-2 number, since 2×686651146² = 942979592606226632, which contains 22 as substring.

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, 168456 + ... + 172483.

It is an arithmetic number, because the mean of its divisors is an integer number (69040350).

Almost surely, 2^686651146 is an apocalyptic number.

686651146 is a deficient number, since it is larger than the sum of its proper divisors (417994454).

686651146 is a wasteful number, since it uses less digits than its factorization.

686651146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 341013.

The product of its digits is 207360, while the sum is 43.

The square root of 686651146 is about 26204.0291939999. The cubic root of 686651146 is about 882.2236917695.

The spelling of 686651146 in words is "six hundred eighty-six million, six hundred fifty-one thousand, one hundred forty-six".