136997 has 4 divisors (see below), whose sum is σ = 156576. Its totient is φ = 117420.

The previous prime is 136993. The next prime is 136999. The reversal of 136997 is 799631.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 136997 - 2² = 136993 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136991) 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, 9779 + ... + 9792.

It is an arithmetic number, because the mean of its divisors is an integer number (39144).

2¹³⁶⁹⁹⁷ is an apocalyptic number.

It is an amenable number.

136997 is a deficient number, since it is larger than the sum of its proper divisors (19579).

136997 is an equidigital number, since it uses as much as digits as its factorization.

136997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19578.

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

The square root of 136997 is about 370.1310578700. The cubic root of 136997 is about 51.5509910647.

The spelling of 136997 in words is "one hundred thirty-six thousand, nine hundred ninety-seven".