136986797 has 2 divisors, whose sum is σ = 136986798. Its totient is φ = 136986796.

The previous prime is 136986743. The next prime is 136986809. The reversal of 136986797 is 797689631.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 135745801 + 1240996 = 11651^2 + 1114^2 .

It is a cyclic number.

It is not a de Polignac number, because 136986797 - 2¹⁴ = 136970413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (136986727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68493398 + 68493399.

It is an arithmetic number, because the mean of its divisors is an integer number (68493399).

Almost surely, 2^136986797 is an apocalyptic number.

It is an amenable number.

136986797 is a deficient number, since it is larger than the sum of its proper divisors (1).

136986797 is an equidigital number, since it uses as much as digits as its factorization.

136986797 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3429216, while the sum is 56.

The square root of 136986797 is about 11704.1358929226. The cubic root of 136986797 is about 515.4971126092.

The spelling of 136986797 in words is "one hundred thirty-six million, nine hundred eighty-six thousand, seven hundred ninety-seven".