66089237 has 4 divisors (see below), whose sum is σ = 67626240. Its totient is φ = 64552236.

The previous prime is 66089213. The next prime is 66089297. The reversal of 66089237 is 73298066.

66089237 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 66089237 - 2¹⁶ = 66023701 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 66089194 and 66089203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66089297) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 768437 + ... + 768522.

It is an arithmetic number, because the mean of its divisors is an integer number (16906560).

Almost surely, 2^66089237 is an apocalyptic number.

It is an amenable number.

66089237 is a deficient number, since it is larger than the sum of its proper divisors (1537003).

66089237 is a wasteful number, since it uses less digits than its factorization.

66089237 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1537002.

The product of its (nonzero) digits is 108864, while the sum is 41.

The square root of 66089237 is about 8129.5287071269. The cubic root of 66089237 is about 404.3060554589.

The spelling of 66089237 in words is "sixty-six million, eighty-nine thousand, two hundred thirty-seven".