663507263 has 8 divisors (see below), whose sum is σ = 703235808. Its totient is φ = 623856384.

The previous prime is 663507239. The next prime is 663507349. The reversal of 663507263 is 362705366.

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 663507263 - 2¹² = 663503167 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (663507763) 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, 1331 + ... + 36452.

It is an arithmetic number, because the mean of its divisors is an integer number (87904476).

Almost surely, 2^663507263 is an apocalyptic number.

663507263 is a deficient number, since it is larger than the sum of its proper divisors (39728545).

663507263 is a wasteful number, since it uses less digits than its factorization.

663507263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38833.

The product of its (nonzero) digits is 136080, while the sum is 38.

The square root of 663507263 is about 25758.6347270192. The cubic root of 663507263 is about 872.1982823336.

The spelling of 663507263 in words is "six hundred sixty-three million, five hundred seven thousand, two hundred sixty-three".