137699 has 2 divisors, whose sum is σ = 137700. Its totient is φ = 137698.

The previous prime is 137659. The next prime is 137707. The reversal of 137699 is 996731.

137699 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 137699 - 2⁸ = 137443 is a prime.

It is a super-2 number, since 2×137699² = 37922029202, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a plaindrome in base 15.

It is not a weakly prime, because it can be changed into another prime (137639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68849 + 68850.

It is an arithmetic number, because the mean of its divisors is an integer number (68850).

2¹³⁷⁶⁹⁹ is an apocalyptic number.

137699 is a deficient number, since it is larger than the sum of its proper divisors (1).

137699 is an equidigital number, since it uses as much as digits as its factorization.

137699 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10206, while the sum is 35.

The square root of 137699 is about 371.0781588830. The cubic root of 137699 is about 51.6388936178.

The spelling of 137699 in words is "one hundred thirty-seven thousand, six hundred ninety-nine".