136621607 has 2 divisors, whose sum is σ = 136621608. Its totient is φ = 136621606.

The previous prime is 136621591. The next prime is 136621631. The reversal of 136621607 is 706126631.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 136621607 - 2⁴ = 136621591 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (136621207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68310803 + 68310804.

It is an arithmetic number, because the mean of its divisors is an integer number (68310804).

Almost surely, 2^136621607 is an apocalyptic number.

136621607 is a deficient number, since it is larger than the sum of its proper divisors (1).

136621607 is an equidigital number, since it uses as much as digits as its factorization.

136621607 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9072, while the sum is 32.

The square root of 136621607 is about 11688.5245861058. The cubic root of 136621607 is about 515.0386209136.

The spelling of 136621607 in words is "one hundred thirty-six million, six hundred twenty-one thousand, six hundred seven".