136573687 has 2 divisors, whose sum is σ = 136573688. Its totient is φ = 136573686.

The previous prime is 136573669. The next prime is 136573709. The reversal of 136573687 is 786375631.

It is a weak prime.

It is an emirp because it is prime and its reverse (786375631) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 136573687 - 2¹⁵ = 136540919 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (136573607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68286843 + 68286844.

It is an arithmetic number, because the mean of its divisors is an integer number (68286844).

Almost surely, 2^136573687 is an apocalyptic number.

136573687 is a deficient number, since it is larger than the sum of its proper divisors (1).

136573687 is an equidigital number, since it uses as much as digits as its factorization.

136573687 is an evil number, because the sum of its binary digits is even.

The product of its digits is 635040, while the sum is 46.

The square root of 136573687 is about 11686.4745325526. The cubic root of 136573687 is about 514.9783973092.

The spelling of 136573687 in words is "one hundred thirty-six million, five hundred seventy-three thousand, six hundred eighty-seven".