66275237 has 8 divisors (see below), whose sum is σ = 78355200. Its totient is φ = 54848304.

The previous prime is 66275207. The next prime is 66275267. The reversal of 66275237 is 73257266.

It is an interprime number because it is at equal distance from previous prime (66275207) and next prime (66275267).

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

It is not a de Polignac number, because 66275237 - 2¹⁸ = 66013093 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 66275237.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66275207) 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, 163037 + ... + 163442.

It is an arithmetic number, because the mean of its divisors is an integer number (9794400).

Almost surely, 2^66275237 is an apocalyptic number.

It is an amenable number.

66275237 is a deficient number, since it is larger than the sum of its proper divisors (12079963).

66275237 is a wasteful number, since it uses less digits than its factorization.

66275237 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326515.

The product of its digits is 105840, while the sum is 38.

The square root of 66275237 is about 8140.9604470234. The cubic root of 66275237 is about 404.6849900223.

The spelling of 66275237 in words is "sixty-six million, two hundred seventy-five thousand, two hundred thirty-seven".