66267741 has 4 divisors (see below), whose sum is σ = 88356992. Its totient is φ = 44178492.

The previous prime is 66267737. The next prime is 66267743. The reversal of 66267741 is 14776266.

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 not a de Polignac number, because 66267741 - 2² = 66267737 is a prime.

It is the 8141-st Hogben number.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 66267741.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66267743) by changing a digit.

It is a nontrivial repunit in base 8140.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11044621 + ... + 11044626.

It is an arithmetic number, because the mean of its divisors is an integer number (22089248).

Almost surely, 2^66267741 is an apocalyptic number.

It is an amenable number.

66267741 is a deficient number, since it is larger than the sum of its proper divisors (22089251).

66267741 is a wasteful number, since it uses less digits than its factorization.

66267741 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22089250.

The product of its digits is 84672, while the sum is 39.

The square root of 66267741 is about 8140.5000460660. The cubic root of 66267741 is about 404.6697322720.

The spelling of 66267741 in words is "sixty-six million, two hundred sixty-seven thousand, seven hundred forty-one".