66019941 has 24 divisors (see below), whose sum is σ = 106506400. Its totient is φ = 40625712.

The previous prime is 66019937. The next prime is 66019969. The reversal of 66019941 is 14991066.

66019941 is a `hidden beast` number, since 6 + 601 + 9 + 9 + 41 = 666.

It is not a de Polignac number, because 66019941 - 2² = 66019937 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 66019896 and 66019905.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66019901) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7291 + ... + 13608.

Almost surely, 2^66019941 is an apocalyptic number.

It is an amenable number.

66019941 is a deficient number, since it is larger than the sum of its proper divisors (40486459).

66019941 is a wasteful number, since it uses less digits than its factorization.

66019941 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20927 (or 20915 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 36.

The square root of 66019941 is about 8125.2655956590. The cubic root of 66019941 is about 404.1646981494.

The spelling of 66019941 in words is "sixty-six million, nineteen thousand, nine hundred forty-one".