66212337 has 16 divisors (see below), whose sum is σ = 90881280. Its totient is φ = 42861072.

The previous prime is 66212299. The next prime is 66212347. The reversal of 66212337 is 73321266.

It is not a de Polignac number, because 66212337 - 2⁶ = 66212273 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66212347) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12438 + ... + 16944.

It is an arithmetic number, because the mean of its divisors is an integer number (5680080).

Almost surely, 2^66212337 is an apocalyptic number.

It is an amenable number.

66212337 is a deficient number, since it is larger than the sum of its proper divisors (24668943).

66212337 is a wasteful number, since it uses less digits than its factorization.

66212337 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4652.

The product of its digits is 9072, while the sum is 30.

The square root of 66212337 is about 8137.0963494357. The cubic root of 66212337 is about 404.5569243775.

The spelling of 66212337 in words is "sixty-six million, two hundred twelve thousand, three hundred thirty-seven".