66745336 has 32 divisors (see below), whose sum is σ = 146895840. Its totient is φ = 27831168.

The previous prime is 66745319. The next prime is 66745337. The reversal of 66745336 is 63354766.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66745337) 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, 14035 + ... + 18178.

It is an arithmetic number, because the mean of its divisors is an integer number (4590495).

Almost surely, 2^66745336 is an apocalyptic number.

It is an amenable number.

66745336 is an abundant number, since it is smaller than the sum of its proper divisors (80150504).

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

66745336 is a wasteful number, since it uses less digits than its factorization.

66745336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32263 (or 32259 counting only the distinct ones).

The product of its digits is 272160, while the sum is 40.

The square root of 66745336 is about 8169.7818820333. The cubic root of 66745336 is about 405.6395646015.

It can be divided in two parts, 667453 and 36, that added together give a square (667489 = 817²).

The spelling of 66745336 in words is "sixty-six million, seven hundred forty-five thousand, three hundred thirty-six".