663343798 has 16 divisors (see below), whose sum is σ = 1073280096. Its totient is φ = 305665920.

The previous prime is 663343781. The next prime is 663343801. The reversal of 663343798 is 897343366.

It is a super-5 number, since 5×663343798⁵ (a number of 45 digits) contains 55555 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3811 + ... + 36622.

It is an arithmetic number, because the mean of its divisors is an integer number (67080006).

Almost surely, 2^663343798 is an apocalyptic number.

663343798 is a deficient number, since it is larger than the sum of its proper divisors (409936298).

663343798 is a wasteful number, since it uses less digits than its factorization.

663343798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41079.

The product of its digits is 1959552, while the sum is 49.

The square root of 663343798 is about 25755.4615178995. The cubic root of 663343798 is about 872.1266500596.

The spelling of 663343798 in words is "six hundred sixty-three million, three hundred forty-three thousand, seven hundred ninety-eight".