136664929 has 8 divisors (see below), whose sum is σ = 145476000. Its totient is φ = 128015712.

The previous prime is 136664917. The next prime is 136664947. The reversal of 136664929 is 929466631.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 136664929 - 2¹⁵ = 136632161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (136664959) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38719 + ... + 42100.

It is an arithmetic number, because the mean of its divisors is an integer number (18184500).

Almost surely, 2^136664929 is an apocalyptic number.

136664929 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

136664929 is a deficient number, since it is larger than the sum of its proper divisors (8811071).

136664929 is an equidigital number, since it uses as much as digits as its factorization.

136664929 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80927.

The product of its digits is 419904, while the sum is 46.

The square root of 136664929 is about 11690.3776243541. The cubic root of 136664929 is about 515.0930538486.

The spelling of 136664929 in words is "one hundred thirty-six million, six hundred sixty-four thousand, nine hundred twenty-nine".