136995866 has 24 divisors (see below), whose sum is σ = 249441120. Its totient is φ = 56158872.

The previous prime is 136995853. The next prime is 136995869. The reversal of 136995866 is 668599631.

It is not an unprimeable number, because it can be changed into a prime (136995869) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28136 + ... + 32643.

It is an arithmetic number, because the mean of its divisors is an integer number (10393380).

Almost surely, 2^136995866 is an apocalyptic number.

136995866 is a deficient number, since it is larger than the sum of its proper divisors (112445254).

136995866 is a wasteful number, since it uses less digits than its factorization.

136995866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60818 (or 60811 counting only the distinct ones).

The product of its digits is 2099520, while the sum is 53.

The square root of 136995866 is about 11704.5233136596. The cubic root of 136995866 is about 515.5084882557.

The spelling of 136995866 in words is "one hundred thirty-six million, nine hundred ninety-five thousand, eight hundred sixty-six".