136986664 has 32 divisors (see below), whose sum is σ = 260922600. Its totient is φ = 67415040.

The previous prime is 136986631. The next prime is 136986673. The reversal of 136986664 is 466689631.

It can be written as a sum of positive squares in 4 ways, for example, as 78464164 + 58522500 = 8858^2 + 7650^2 .

It is a super-2 number, since 2×136986664² = 37530692227697792, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 299524 + ... + 299980.

Almost surely, 2^136986664 is an apocalyptic number.

It is an amenable number.

136986664 is a deficient number, since it is larger than the sum of its proper divisors (123935936).

136986664 is a wasteful number, since it uses less digits than its factorization.

136986664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 973 (or 969 counting only the distinct ones).

The product of its digits is 1119744, while the sum is 49.

The square root of 136986664 is about 11704.1302111690. The cubic root of 136986664 is about 515.4969457777.

The spelling of 136986664 in words is "one hundred thirty-six million, nine hundred eighty-six thousand, six hundred sixty-four".