136669864 has 32 divisors (see below), whose sum is σ = 268272000. Its totient is φ = 65150272.

The previous prime is 136669853. The next prime is 136669873. The reversal of 136669864 is 468966631.

It is a super-3 number, since 3×136669864³ (a number of 25 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65022 + ... + 67090.

It is an arithmetic number, because the mean of its divisors is an integer number (8383500).

Almost surely, 2^136669864 is an apocalyptic number.

It is an amenable number.

136669864 is a deficient number, since it is larger than the sum of its proper divisors (131602136).

136669864 is a wasteful number, since it uses less digits than its factorization.

136669864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2457 (or 2453 counting only the distinct ones).

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

The square root of 136669864 is about 11690.5886934748. The cubic root of 136669864 is about 515.0992538144.

The spelling of 136669864 in words is "one hundred thirty-six million, six hundred sixty-nine thousand, eight hundred sixty-four".