137487 has 8 divisors (see below), whose sum is σ = 209536. Its totient is φ = 78552.

The previous prime is 137483. The next prime is 137491. The reversal of 137487 is 784731.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (137483) and next prime (137491).

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

It is not a de Polignac number, because 137487 - 2² = 137483 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 (137483) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3253 + ... + 3294.

It is an arithmetic number, because the mean of its divisors is an integer number (26192).

2¹³⁷⁴⁸⁷ is an apocalyptic number.

137487 is a deficient number, since it is larger than the sum of its proper divisors (72049).

137487 is an equidigital number, since it uses as much as digits as its factorization.

137487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6557.

The product of its digits is 4704, while the sum is 30.

The square root of 137487 is about 370.7923947440. The cubic root of 137487 is about 51.6123790983.

The spelling of 137487 in words is "one hundred thirty-seven thousand, four hundred eighty-seven".