136609672 has 8 divisors (see below), whose sum is σ = 256143150. Its totient is φ = 68304832.

The previous prime is 136609657. The next prime is 136609679. The reversal of 136609672 is 276906631.

It can be written as a sum of positive squares in only one way, i.e., 124679556 + 11930116 = 11166^2 + 3454^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (136609679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8538097 + ... + 8538112.

Almost surely, 2^136609672 is an apocalyptic number.

It is an amenable number.

136609672 is a deficient number, since it is larger than the sum of its proper divisors (119533478).

136609672 is a wasteful number, since it uses less digits than its factorization.

136609672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17076215 (or 17076211 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 40.

The square root of 136609672 is about 11688.0140314769. The cubic root of 136609672 is about 515.0236228835.

It can be divided in two parts, 13660 and 9672, that added together give a palindrome (23332).

The spelling of 136609672 in words is "one hundred thirty-six million, six hundred nine thousand, six hundred seventy-two".