136907866 has 4 divisors (see below), whose sum is σ = 205361802. Its totient is φ = 68453932.

The previous prime is 136907861. The next prime is 136907887. The reversal of 136907866 is 668709631.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 113103225 + 23804641 = 10635^2 + 4879^2 .

It is not an unprimeable number, because it can be changed into a prime (136907861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34226965 + ... + 34226968.

Almost surely, 2^136907866 is an apocalyptic number.

136907866 is a deficient number, since it is larger than the sum of its proper divisors (68453936).

136907866 is an equidigital number, since it uses as much as digits as its factorization.

136907866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68453935.

The product of its (nonzero) digits is 326592, while the sum is 46.

The square root of 136907866 is about 11700.7634793632. The cubic root of 136907866 is about 515.3980847689.

The spelling of 136907866 in words is "one hundred thirty-six million, nine hundred seven thousand, eight hundred sixty-six".