663883747 has 8 divisors (see below), whose sum is σ = 693198000. Its totient is φ = 634997664.

The previous prime is 663883739. The next prime is 663883819. The reversal of 663883747 is 747388366.

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 663883747 - 2³ = 663883739 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 663883694 and 663883703.

It is not an unprimeable number, because it can be changed into a prime (663883147) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 103872 + ... + 110077.

It is an arithmetic number, because the mean of its divisors is an integer number (86649750).

Almost surely, 2^663883747 is an apocalyptic number.

663883747 is a deficient number, since it is larger than the sum of its proper divisors (29314253).

663883747 is a wasteful number, since it uses less digits than its factorization.

663883747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214085.

The product of its digits is 4064256, while the sum is 52.

The square root of 663883747 is about 25765.9416090311. The cubic root of 663883747 is about 872.3632172830.

The spelling of 663883747 in words is "six hundred sixty-three million, eight hundred eighty-three thousand, seven hundred forty-seven".