66136044 has 24 divisors (see below), whose sum is σ = 166188400. Its totient is φ = 20349504.

The previous prime is 66136043. The next prime is 66136099. The reversal of 66136044 is 44063166.

It is not an unprimeable number, because it can be changed into a prime (66136043) 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, 211819 + ... + 212130.

Almost surely, 2^66136044 is an apocalyptic number.

It is an amenable number.

66136044 is an abundant number, since it is smaller than the sum of its proper divisors (100052356).

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

66136044 is a wasteful number, since it uses less digits than its factorization.

66136044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 423969 (or 423967 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 30.

The square root of 66136044 is about 8132.4070237538. The cubic root of 66136044 is about 404.4014814239.

The spelling of 66136044 in words is "sixty-six million, one hundred thirty-six thousand, forty-four".