663490741 has 8 divisors (see below), whose sum is σ = 680500800. Its totient is φ = 646520160.

The previous prime is 663490733. The next prime is 663490753. The reversal of 663490741 is 147094366.

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

It is a cyclic number.

It is not a de Polignac number, because 663490741 - 2³ = 663490733 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 663490694 and 663490703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (663490721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25800 + ... + 44638.

It is an arithmetic number, because the mean of its divisors is an integer number (85062600).

Almost surely, 2^663490741 is an apocalyptic number.

It is an amenable number.

663490741 is a deficient number, since it is larger than the sum of its proper divisors (17010059).

663490741 is a wasteful number, since it uses less digits than its factorization.

663490741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19739.

The product of its (nonzero) digits is 108864, while the sum is 40.

The square root of 663490741 is about 25758.3140170315. The cubic root of 663490741 is about 872.1910427346.

The spelling of 663490741 in words is "six hundred sixty-three million, four hundred ninety thousand, seven hundred forty-one".