66733337 has 8 divisors (see below), whose sum is σ = 73012800. Its totient is φ = 60489360.

The previous prime is 66733333. The next prime is 66733349. The reversal of 66733337 is 73333766.

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

It is a cyclic number.

It is not a de Polignac number, because 66733337 - 2² = 66733333 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 66733337.

It is not an unprimeable number, because it can be changed into a prime (66733333) 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, 4853 + ... + 12530.

It is an arithmetic number, because the mean of its divisors is an integer number (9126600).

Almost surely, 2^66733337 is an apocalyptic number.

It is an amenable number.

66733337 is a deficient number, since it is larger than the sum of its proper divisors (6279463).

66733337 is a wasteful number, since it uses less digits than its factorization.

66733337 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17743.

The product of its digits is 142884, while the sum is 38.

The square root of 66733337 is about 8169.0474964955. The cubic root of 66733337 is about 405.6152554831.

It can be divided in two parts, 6673 and 3337, that multiplied together give a triangular number (22267801 = T₆₆₇₃).

The spelling of 66733337 in words is "sixty-six million, seven hundred thirty-three thousand, three hundred thirty-seven".