136966687 has 16 divisors (see below), whose sum is σ = 169384320. Its totient is φ = 108885600.

The previous prime is 136966667. The next prime is 136966703. The reversal of 136966687 is 786669631.

136966687 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 136966687 - 2¹⁹ = 136442399 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136966667) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22489 + ... + 27922.

It is an arithmetic number, because the mean of its divisors is an integer number (10586520).

Almost surely, 2^136966687 is an apocalyptic number.

136966687 is a deficient number, since it is larger than the sum of its proper divisors (32417633).

136966687 is a wasteful number, since it uses less digits than its factorization.

136966687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50454.

The product of its digits is 1959552, while the sum is 52.

The square root of 136966687 is about 11703.2767633685. The cubic root of 136966687 is about 515.4718859584.

The spelling of 136966687 in words is "one hundred thirty-six million, nine hundred sixty-six thousand, six hundred eighty-seven".