136883897 has 2 divisors, whose sum is σ = 136883898. Its totient is φ = 136883896.

The previous prime is 136883861. The next prime is 136883909. The reversal of 136883897 is 798388631.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 132457081 + 4426816 = 11509^2 + 2104^2 .

It is an emirp because it is prime and its reverse (798388631) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 136883897 - 2⁸ = 136883641 is a prime.

It is not a weakly prime, because it can be changed into another prime (136883827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68441948 + 68441949.

It is an arithmetic number, because the mean of its divisors is an integer number (68441949).

Almost surely, 2^136883897 is an apocalyptic number.

It is an amenable number.

136883897 is a deficient number, since it is larger than the sum of its proper divisors (1).

136883897 is an equidigital number, since it uses as much as digits as its factorization.

136883897 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1741824, while the sum is 53.

The square root of 136883897 is about 11699.7391851272. The cubic root of 136883897 is about 515.3680054217.

The spelling of 136883897 in words is "one hundred thirty-six million, eight hundred eighty-three thousand, eight hundred ninety-seven".