663276446 has 12 divisors (see below), whose sum is σ = 1157349888. Its totient is φ = 284261292.

The previous prime is 663276443. The next prime is 663276457. The reversal of 663276446 is 644672366.

It is a junction number, because it is equal to n+sod(n) for n = 663276397 and 663276406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (663276443) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3383966 + ... + 3384161.

It is an arithmetic number, because the mean of its divisors is an integer number (96445824).

Almost surely, 2^663276446 is an apocalyptic number.

663276446 is a deficient number, since it is larger than the sum of its proper divisors (494073442).

663276446 is a wasteful number, since it uses less digits than its factorization.

663276446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6768143 (or 6768136 counting only the distinct ones).

The product of its digits is 870912, while the sum is 44.

The square root of 663276446 is about 25754.1539562068. The cubic root of 663276446 is about 872.0971322025.

The spelling of 663276446 in words is "six hundred sixty-three million, two hundred seventy-six thousand, four hundred forty-six".