663020726 has 8 divisors (see below), whose sum is σ = 996109104. Its totient is φ = 330984360.

The previous prime is 663020711. The next prime is 663020753. The reversal of 663020726 is 627020366.

663020726 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 a junction number, because it is equal to n+sod(n) for n = 663020692 and 663020701.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 261425 + ... + 263948.

It is an arithmetic number, because the mean of its divisors is an integer number (124513638).

Almost surely, 2^663020726 is an apocalyptic number.

663020726 is a deficient number, since it is larger than the sum of its proper divisors (333088378).

663020726 is a wasteful number, since it uses less digits than its factorization.

663020726 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 526006.

The product of its (nonzero) digits is 18144, while the sum is 32.

The square root of 663020726 is about 25749.1888415927. The cubic root of 663020726 is about 871.9850415118.

The spelling of 663020726 in words is "six hundred sixty-three million, twenty thousand, seven hundred twenty-six".