66169041 has 4 divisors (see below), whose sum is σ = 88225392. Its totient is φ = 44112692.

The previous prime is 66169027. The next prime is 66169043. The reversal of 66169041 is 14096166.

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 66169041 - 2¹¹ = 66166993 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 66168993 and 66169011.

It is not an unprimeable number, because it can be changed into a prime (66169043) 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, 11028171 + ... + 11028176.

It is an arithmetic number, because the mean of its divisors is an integer number (22056348).

Almost surely, 2^66169041 is an apocalyptic number.

It is an amenable number.

66169041 is a deficient number, since it is larger than the sum of its proper divisors (22056351).

66169041 is a wasteful number, since it uses less digits than its factorization.

66169041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22056350.

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 66169041 is about 8134.4355059217. The cubic root of 66169041 is about 404.4687257295.

The spelling of 66169041 in words is "sixty-six million, one hundred sixty-nine thousand, forty-one".