686896151 has 16 divisors (see below), whose sum is σ = 732080640. Its totient is φ = 642660480.

The previous prime is 686896139. The next prime is 686896159. The reversal of 686896151 is 151698686.

It is a cyclic number.

It is not a de Polignac number, because 686896151 - 2⁶ = 686896087 is a prime.

It is a super-2 number, since 2×686896151² = 943652644517229602, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 686896151.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (686896159) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 993716 + ... + 994406.

It is an arithmetic number, because the mean of its divisors is an integer number (45755040).

Almost surely, 2^686896151 is an apocalyptic number.

686896151 is a deficient number, since it is larger than the sum of its proper divisors (45184489).

686896151 is a wasteful number, since it uses less digits than its factorization.

686896151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1286.

The product of its digits is 622080, while the sum is 50.

The square root of 686896151 is about 26208.7037260525. The cubic root of 686896151 is about 882.3286084674.

The spelling of 686896151 in words is "six hundred eighty-six million, eight hundred ninety-six thousand, one hundred fifty-one".