137828687 has 4 divisors (see below), whose sum is σ = 137855376. Its totient is φ = 137802000.

The previous prime is 137828683. The next prime is 137828689. The reversal of 137828687 is 786828731.

137828687 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 137828687 - 2² = 137828683 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 (137828683) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2843 + ... + 16844.

It is an arithmetic number, because the mean of its divisors is an integer number (34463844).

Almost surely, 2^137828687 is an apocalyptic number.

137828687 is a deficient number, since it is larger than the sum of its proper divisors (26689).

137828687 is an equidigital number, since it uses as much as digits as its factorization.

137828687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26688.

The product of its digits is 903168, while the sum is 50.

The square root of 137828687 is about 11740.0462946276. The cubic root of 137828687 is about 516.5509996132.

The spelling of 137828687 in words is "one hundred thirty-seven million, eight hundred twenty-eight thousand, six hundred eighty-seven".