136985512 has 8 divisors (see below), whose sum is σ = 256847850. Its totient is φ = 68492752.

The previous prime is 136985503. The next prime is 136985557. The reversal of 136985512 is 215589631.

It can be written as a sum of positive squares in only one way, i.e., 73719396 + 63266116 = 8586^2 + 7954^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8561587 + ... + 8561602.

Almost surely, 2^136985512 is an apocalyptic number.

It is an amenable number.

136985512 is a deficient number, since it is larger than the sum of its proper divisors (119862338).

136985512 is a wasteful number, since it uses less digits than its factorization.

136985512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17123195 (or 17123191 counting only the distinct ones).

The product of its digits is 64800, while the sum is 40.

The square root of 136985512 is about 11704.0809976691. The cubic root of 136985512 is about 515.4955007364.

The spelling of 136985512 in words is "one hundred thirty-six million, nine hundred eighty-five thousand, five hundred twelve".