66101841 has 12 divisors (see below), whose sum is σ = 102825268. Its totient is φ = 40677984.

The previous prime is 66101837. The next prime is 66101873. The reversal of 66101841 is 14810166.

66101841 is a `hidden beast` number, since 6 + 610 + 1 + 8 + 41 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 4322241 + 61779600 = 2079^2 + 7860^2 .

It is not a de Polignac number, because 66101841 - 2² = 66101837 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66101891) 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, 282370 + ... + 282603.

Almost surely, 2^66101841 is an apocalyptic number.

It is an amenable number.

66101841 is a deficient number, since it is larger than the sum of its proper divisors (36723427).

66101841 is a wasteful number, since it uses less digits than its factorization.

66101841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 564992 (or 564989 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 66101841 is about 8130.3038688600. The cubic root of 66101841 is about 404.3317558092.

The spelling of 66101841 in words is "sixty-six million, one hundred one thousand, eight hundred forty-one".