686409099527 has 16 divisors (see below), whose sum is σ = 712983398400. Its totient is φ = 660117146400.

The previous prime is 686409099461. The next prime is 686409099581. The reversal of 686409099527 is 725990904686.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-686409099527 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (686409099427) 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, 7806068 + ... + 7893510.

It is an arithmetic number, because the mean of its divisors is an integer number (44561462400).

Almost surely, 2^686409099527 is an apocalyptic number.

686409099527 is a deficient number, since it is larger than the sum of its proper divisors (26574298873).

686409099527 is a wasteful number, since it uses less digits than its factorization.

686409099527 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89054.

The product of its (nonzero) digits is 58786560, while the sum is 65.

The spelling of 686409099527 in words is "six hundred eighty-six billion, four hundred nine million, ninety-nine thousand, five hundred twenty-seven".