137286865 has 8 divisors (see below), whose sum is σ = 165052008. Its totient is φ = 109624320.

The previous prime is 137286857. The next prime is 137286881. The reversal of 137286865 is 568682731.

It can be written as a sum of positive squares in 4 ways, for example, as 33918976 + 103367889 = 5824^2 + 10167^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 137286865 - 2³ = 137286857 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22672 + ... + 28081.

It is an arithmetic number, because the mean of its divisors is an integer number (20631501).

Almost surely, 2^137286865 is an apocalyptic number.

It is an amenable number.

137286865 is a deficient number, since it is larger than the sum of its proper divisors (27765143).

137286865 is an equidigital number, since it uses as much as digits as its factorization.

137286865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51299.

The product of its digits is 483840, while the sum is 46.

The square root of 137286865 is about 11716.9477680836. The cubic root of 137286865 is about 515.8732349401.

The spelling of 137286865 in words is "one hundred thirty-seven million, two hundred eighty-six thousand, eight hundred sixty-five".