136606644 has 36 divisors (see below), whose sum is σ = 345762144. Its totient is φ = 45476112.

The previous prime is 136606643. The next prime is 136606649. The reversal of 136606644 is 446606631.

136606644 is a `hidden beast` number, since 1 + 3 + 6 + 6 + 0 + 6 + 644 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×136606644² = 37322750369885472, which contains 22 as substring.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 136606599 and 136606608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136606643) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 32089 + ... + 36095.

It is an arithmetic number, because the mean of its divisors is an integer number (9604504).

Almost surely, 2^136606644 is an apocalyptic number.

It is an amenable number.

136606644 is an abundant number, since it is smaller than the sum of its proper divisors (209155500).

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

136606644 is a wasteful number, since it uses less digits than its factorization.

136606644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4964 (or 4959 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 36.

The square root of 136606644 is about 11687.8844963492. The cubic root of 136606644 is about 515.0198176306.

The spelling of 136606644 in words is "one hundred thirty-six million, six hundred six thousand, six hundred forty-four".