66227541 has 4 divisors (see below), whose sum is σ = 88303392. Its totient is φ = 44151692.

The previous prime is 66227537. The next prime is 66227569. The reversal of 66227541 is 14572266.

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 66227541 - 2² = 66227537 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66227591) 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, 11037921 + ... + 11037926.

It is an arithmetic number, because the mean of its divisors is an integer number (22075848).

Almost surely, 2^66227541 is an apocalyptic number.

It is an amenable number.

66227541 is a deficient number, since it is larger than the sum of its proper divisors (22075851).

66227541 is a wasteful number, since it uses less digits than its factorization.

66227541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22075850.

The product of its digits is 20160, while the sum is 33.

The square root of 66227541 is about 8138.0305357009. The cubic root of 66227541 is about 404.5878874528.

It can be divided in two parts, 662 and 27541, that added together give a triangular number (28203 = T₂₃₇).

The spelling of 66227541 in words is "sixty-six million, two hundred twenty-seven thousand, five hundred forty-one".