66266541 has 12 divisors (see below), whose sum is σ = 104420160. Its totient is φ = 40161480.

The previous prime is 66266533. The next prime is 66266567. The reversal of 66266541 is 14566266.

It is a happy number.

It is not a de Polignac number, because 66266541 - 2³ = 66266533 is a prime.

It is a super-2 number, since 2×66266541² = 8782508912209362, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 66266496 and 66266505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66266581) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 334581 + ... + 334778.

It is an arithmetic number, because the mean of its divisors is an integer number (8701680).

Almost surely, 2^66266541 is an apocalyptic number.

It is an amenable number.

66266541 is a deficient number, since it is larger than the sum of its proper divisors (38153619).

66266541 is a wasteful number, since it uses less digits than its factorization.

66266541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 669376 (or 669373 counting only the distinct ones).

The product of its digits is 51840, while the sum is 36.

The square root of 66266541 is about 8140.4263401864. The cubic root of 66266541 is about 404.6672896224.

The spelling of 66266541 in words is "sixty-six million, two hundred sixty-six thousand, five hundred forty-one".