666663041 has 8 divisors (see below), whose sum is σ = 770049504. Its totient is φ = 570406720.

The previous prime is 666663031. The next prime is 666663059. The reversal of 666663041 is 140366666.

666663041 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-666663041 is a prime.

It is a super-2 number, since 2×666663041² = 888879220470735362, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 666662986 and 666663004.

It is not an unprimeable number, because it can be changed into a prime (666663031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1782335 + ... + 1782708.

It is an arithmetic number, because the mean of its divisors is an integer number (96256188).

Almost surely, 2^666663041 is an apocalyptic number.

It is an amenable number.

666663041 is a deficient number, since it is larger than the sum of its proper divisors (103386463).

666663041 is a wasteful number, since it uses less digits than its factorization.

666663041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3565071.

The product of its (nonzero) digits is 93312, while the sum is 38.

The square root of 666663041 is about 25819.8187638876. The cubic root of 666663041 is about 873.5788810776.

The spelling of 666663041 in words is "six hundred sixty-six million, six hundred sixty-three thousand, forty-one".