66077136 has 60 divisors (see below), whose sum is σ = 194665120. Its totient is φ = 20865600.

The previous prime is 66077131. The next prime is 66077161. The reversal of 66077136 is 63177066.

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

It is a self number, because there is not a number n which added to its sum of digits gives 66077136.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66077131) 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 11 ways as a sum of consecutive naturals, for example, 9340 + ... + 14811.

Almost surely, 2^66077136 is an apocalyptic number.

It is an amenable number.

66077136 is an abundant number, since it is smaller than the sum of its proper divisors (128587984).

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

66077136 is a wasteful number, since it uses less digits than its factorization.

66077136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24184 (or 24175 counting only the distinct ones).

The product of its (nonzero) digits is 31752, while the sum is 36.

The square root of 66077136 is about 8128.7844109682. The cubic root of 66077136 is about 404.2813776827.

The spelling of 66077136 in words is "sixty-six million, seventy-seven thousand, one hundred thirty-six".