663000623 has 4 divisors (see below), whose sum is σ = 664178808. Its totient is φ = 661822440.

The previous prime is 663000619. The next prime is 663000661. The reversal of 663000623 is 326000366.

It is a happy number.

663000623 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 663000623 - 2² = 663000619 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 663000592 and 663000601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (663000223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 588248 + ... + 589373.

It is an arithmetic number, because the mean of its divisors is an integer number (166044702).

Almost surely, 2^663000623 is an apocalyptic number.

663000623 is a deficient number, since it is larger than the sum of its proper divisors (1178185).

663000623 is a wasteful number, since it uses less digits than its factorization.

663000623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1178184.

The product of its (nonzero) digits is 3888, while the sum is 26.

The square root of 663000623 is about 25748.7984768222. The cubic root of 663000623 is about 871.9762284678.

Adding to 663000623 its reverse (326000366), we get a palindrome (989000989).

The spelling of 663000623 in words is "six hundred sixty-three million, six hundred twenty-three", and thus it is an aban number.