136660664 has 32 divisors (see below), whose sum is σ = 305579520. Its totient is φ = 56021856.

The previous prime is 136660661. The next prime is 136660703. The reversal of 136660664 is 466066631.

It is a super-2 number, since 2×136660664² = 37352274169841792, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136660661) by changing a digit.

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, 51764 + ... + 54339.

It is an arithmetic number, because the mean of its divisors is an integer number (9549360).

Almost surely, 2^136660664 is an apocalyptic number.

136660664 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

136660664 is an abundant number, since it is smaller than the sum of its proper divisors (168918856).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

136660664 is a wasteful number, since it uses less digits than its factorization.

136660664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106139 (or 106135 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 38.

The square root of 136660664 is about 11690.1952079510. The cubic root of 136660664 is about 515.0876955007.

The spelling of 136660664 in words is "one hundred thirty-six million, six hundred sixty thousand, six hundred sixty-four".