663732542 has 8 divisors (see below), whose sum is σ = 1086107832. Its totient is φ = 301696600.

The previous prime is 663732539. The next prime is 663732583. The reversal of 663732542 is 245237366.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 663732496 and 663732505.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 15084809 + ... + 15084852.

It is an arithmetic number, because the mean of its divisors is an integer number (135763479).

Almost surely, 2^663732542 is an apocalyptic number.

663732542 is a deficient number, since it is larger than the sum of its proper divisors (422375290).

663732542 is a wasteful number, since it uses less digits than its factorization.

663732542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30169674.

The product of its digits is 181440, while the sum is 38.

The square root of 663732542 is about 25763.0072390628. The cubic root of 663732542 is about 872.2969829479.

The spelling of 663732542 in words is "six hundred sixty-three million, seven hundred thirty-two thousand, five hundred forty-two".