66527371 has 4 divisors (see below), whose sum is σ = 66672144. Its totient is φ = 66382600.

The previous prime is 66527347. The next prime is 66527389. The reversal of 66527371 is 17372566.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 66527371 - 2¹¹ = 66525323 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 66527371.

It is not an unprimeable number, because it can be changed into a prime (66527771) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71695 + ... + 72616.

It is an arithmetic number, because the mean of its divisors is an integer number (16668036).

Almost surely, 2^66527371 is an apocalyptic number.

66527371 is a deficient number, since it is larger than the sum of its proper divisors (144773).

66527371 is a wasteful number, since it uses less digits than its factorization.

66527371 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144772.

The product of its digits is 52920, while the sum is 37.

The square root of 66527371 is about 8156.4312661850. The cubic root of 66527371 is about 405.1975279912.

The spelling of 66527371 in words is "sixty-six million, five hundred twenty-seven thousand, three hundred seventy-one".