665279041 has 8 divisors (see below), whose sum is σ = 760646144. Its totient is φ = 569993760.

The previous prime is 665279039. The next prime is 665279063. The reversal of 665279041 is 140972566.

665279041 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 not a de Polignac number, because 665279041 - 2¹ = 665279039 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 665278985 and 665279003.

It is not an unprimeable number, because it can be changed into a prime (665279011) 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, 1905 + ... + 36526.

It is an arithmetic number, because the mean of its divisors is an integer number (95080768).

Almost surely, 2^665279041 is an apocalyptic number.

It is an amenable number.

665279041 is a deficient number, since it is larger than the sum of its proper divisors (95367103).

665279041 is a wasteful number, since it uses less digits than its factorization.

665279041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40911.

The product of its (nonzero) digits is 90720, while the sum is 40.

The square root of 665279041 is about 25793.0037219398. The cubic root of 665279041 is about 872.9739423911.

The spelling of 665279041 in words is "six hundred sixty-five million, two hundred seventy-nine thousand, forty-one".