136666684 has 36 divisors (see below), whose sum is σ = 303511320. Its totient is φ = 53245920.

The previous prime is 136666681. The next prime is 136666687. The reversal of 136666684 is 486666631.

It is an interprime number because it is at equal distance from previous prime (136666681) and next prime (136666687).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136666681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 29539 + ... + 33850.

It is an arithmetic number, because the mean of its divisors is an integer number (8430870).

Almost surely, 2^136666684 is an apocalyptic number.

136666684 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

136666684 is an abundant number, since it is smaller than the sum of its proper divisors (166844636).

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

136666684 is a wasteful number, since it uses less digits than its factorization.

136666684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63418 (or 63409 counting only the distinct ones).

The product of its digits is 746496, while the sum is 46.

The square root of 136666684 is about 11690.4526858458. The cubic root of 136666684 is about 515.0952587168.

The spelling of 136666684 in words is "one hundred thirty-six million, six hundred sixty-six thousand, six hundred eighty-four".