663750044 has 6 divisors (see below), whose sum is σ = 1161562584. Its totient is φ = 331875020.

The previous prime is 663750013. The next prime is 663750049. The reversal of 663750044 is 440057366.

It is a junction number, because it is equal to n+sod(n) for n = 663749986 and 663750013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (663750049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82968752 + ... + 82968759.

It is an arithmetic number, because the mean of its divisors is an integer number (193593764).

Almost surely, 2^663750044 is an apocalyptic number.

It is an amenable number.

663750044 is a deficient number, since it is larger than the sum of its proper divisors (497812540).

663750044 is a wasteful number, since it uses less digits than its factorization.

663750044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165937515 (or 165937513 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 35.

The square root of 663750044 is about 25763.3469099028. The cubic root of 663750044 is about 872.3046500963.

The spelling of 663750044 in words is "six hundred sixty-three million, seven hundred fifty thousand, forty-four".