663430743 has 20 divisors (see below), whose sum is σ = 996609240. Its totient is φ = 439806672.

The previous prime is 663430741. The next prime is 663430759. The reversal of 663430743 is 347034366.

It is not a de Polignac number, because 663430743 - 2¹ = 663430741 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 663430698 and 663430707.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (663430741) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 8380 + ... + 37377.

It is an arithmetic number, because the mean of its divisors is an integer number (49830462).

Almost surely, 2^663430743 is an apocalyptic number.

663430743 is a deficient number, since it is larger than the sum of its proper divisors (333178497).

663430743 is a wasteful number, since it uses less digits than its factorization.

663430743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45948 (or 45939 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 36.

The square root of 663430743 is about 25757.1493570232. The cubic root of 663430743 is about 872.1647518399.

The spelling of 663430743 in words is "six hundred sixty-three million, four hundred thirty thousand, seven hundred forty-three".