66380737 has 8 divisors (see below), whose sum is σ = 72912960. Its totient is φ = 60152400.

The previous prime is 66380693. The next prime is 66380761. The reversal of 66380737 is 73708366.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66380737 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 66380737.

It is not an unprimeable number, because it can be changed into a prime (66380137) 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, 75514 + ... + 76387.

It is an arithmetic number, because the mean of its divisors is an integer number (9114120).

Almost surely, 2^66380737 is an apocalyptic number.

It is an amenable number.

66380737 is a deficient number, since it is larger than the sum of its proper divisors (6532223).

66380737 is a wasteful number, since it uses less digits than its factorization.

66380737 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151943.

The product of its (nonzero) digits is 127008, while the sum is 40.

The square root of 66380737 is about 8147.4374498980. The cubic root of 66380737 is about 404.8996083029.

The spelling of 66380737 in words is "sixty-six million, three hundred eighty thousand, seven hundred thirty-seven".