136564479 has 6 divisors (see below), whose sum is σ = 197259816. Its totient is φ = 91042980.

The previous prime is 136564471. The next prime is 136564489. The reversal of 136564479 is 974465631.

136564479 is a `hidden beast` number, since 13 + 6 + 564 + 4 + 79 = 666.

It is not a de Polignac number, because 136564479 - 2³ = 136564471 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136564471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7586907 + ... + 7586924.

It is an arithmetic number, because the mean of its divisors is an integer number (32876636).

Almost surely, 2^136564479 is an apocalyptic number.

136564479 is a deficient number, since it is larger than the sum of its proper divisors (60695337).

136564479 is a wasteful number, since it uses less digits than its factorization.

136564479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15173837 (or 15173834 counting only the distinct ones).

The product of its digits is 544320, while the sum is 45.

The square root of 136564479 is about 11686.0805662121. The cubic root of 136564479 is about 514.9668235140.

The spelling of 136564479 in words is "one hundred thirty-six million, five hundred sixty-four thousand, four hundred seventy-nine".