660633041 has 4 divisors (see below), whose sum is σ = 676746084. Its totient is φ = 644520000.

The previous prime is 660633031. The next prime is 660633049. The reversal of 660633041 is 140336066.

660633041 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 284428225 + 376204816 = 16865^2 + 19396^2 .

It is not a de Polignac number, because 660633041 - 2²² = 656438737 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 660632995 and 660633013.

It is not an unprimeable number, because it can be changed into a prime (660633049) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8056460 + ... + 8056541.

It is an arithmetic number, because the mean of its divisors is an integer number (169186521).

Almost surely, 2^660633041 is an apocalyptic number.

It is an amenable number.

660633041 is a deficient number, since it is larger than the sum of its proper divisors (16113043).

660633041 is a wasteful number, since it uses less digits than its factorization.

660633041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16113042.

The product of its (nonzero) digits is 7776, while the sum is 29.

The square root of 660633041 is about 25702.7827481773. The cubic root of 660633041 is about 870.9370451655.

The spelling of 660633041 in words is "six hundred sixty million, six hundred thirty-three thousand, forty-one".