137387 has 2 divisors, whose sum is σ = 137388. Its totient is φ = 137386.

The previous prime is 137383. The next prime is 137393. The reversal of 137387 is 783731.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 137387 - 2² = 137383 is a prime.

It is a plaindrome in base 7.

It is not a weakly prime, because it can be changed into another prime (137383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68693 + 68694.

It is an arithmetic number, because the mean of its divisors is an integer number (68694).

2¹³⁷³⁸⁷ is an apocalyptic number.

137387 is a deficient number, since it is larger than the sum of its proper divisors (1).

137387 is an equidigital number, since it uses as much as digits as its factorization.

137387 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3528, while the sum is 29.

The square root of 137387 is about 370.6575238681. The cubic root of 137387 is about 51.5998627883.

The spelling of 137387 in words is "one hundred thirty-seven thousand, three hundred eighty-seven".