66337744 has 80 divisors (see below), whose sum is σ = 147240576. Its totient is φ = 28684800.

The previous prime is 66337717. The next prime is 66337751. The reversal of 66337744 is 44773366.

It is a zygodrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 66337697 and 66337706.

It is a congruent number.

It is an unprimeable number.

It is an upside-down number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 397149 + ... + 397315.

Almost surely, 2^66337744 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66337744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73620288).

66337744 is an abundant number, since it is smaller than the sum of its proper divisors (80902832).

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

66337744 is a wasteful number, since it uses less digits than its factorization.

66337744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284 (or 278 counting only the distinct ones).

The product of its digits is 254016, while the sum is 40.

The square root of 66337744 is about 8144.7985856005. The cubic root of 66337744 is about 404.8121752653.

It can be divided in two parts, 66337 and 744, that added together give a square (67081 = 259²).

The spelling of 66337744 in words is "sixty-six million, three hundred thirty-seven thousand, seven hundred forty-four".