660960441 has 12 divisors (see below), whose sum is σ = 954990868. Its totient is φ = 440515584.

The previous prime is 660960409. The next prime is 660960497. The reversal of 660960441 is 144069066.

660960441 is a `hidden beast` number, since 6 + 6 + 0 + 9 + 604 + 41 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 275427216 + 385533225 = 16596^2 + 19635^2 .

It is not a de Polignac number, because 660960441 - 2⁵ = 660960409 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 660960396 and 660960405.

It is not an unprimeable number, because it can be changed into a prime (660965441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 32481 + ... + 48753.

Almost surely, 2^660960441 is an apocalyptic number.

It is an amenable number.

660960441 is a deficient number, since it is larger than the sum of its proper divisors (294030427).

660960441 is a wasteful number, since it uses less digits than its factorization.

660960441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20792 (or 20789 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 660960441 is about 25709.1509194683. The cubic root of 660960441 is about 871.0808959264.

The spelling of 660960441 in words is "six hundred sixty million, nine hundred sixty thousand, four hundred forty-one".