136670769 has 24 divisors (see below), whose sum is σ = 211203720. Its totient is φ = 84860928.

The previous prime is 136670759. The next prime is 136670771. The reversal of 136670769 is 967076631.

It can be written as a sum of positive squares in 4 ways, for example, as 13727025 + 122943744 = 3705^2 + 11088^2 .

It is not a de Polignac number, because 136670769 - 2¹⁶ = 136605233 is a prime.

It is a super-2 number, since 2×136670769² = 37357798198102722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (136670719) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10237 + ... + 19445.

It is an arithmetic number, because the mean of its divisors is an integer number (8800155).

Almost surely, 2^136670769 is an apocalyptic number.

It is an amenable number.

136670769 is a deficient number, since it is larger than the sum of its proper divisors (74532951).

136670769 is a wasteful number, since it uses less digits than its factorization.

136670769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9329 (or 9326 counting only the distinct ones).

The product of its (nonzero) digits is 285768, while the sum is 45.

The square root of 136670769 is about 11690.6273997592. The cubic root of 136670769 is about 515.1003907726.

The spelling of 136670769 in words is "one hundred thirty-six million, six hundred seventy thousand, seven hundred sixty-nine".