663111450 has 144 divisors (see below), whose sum is σ = 1845881856. Its totient is φ = 170553600.

The previous prime is 663111431. The next prime is 663111451. The reversal of 663111450 is 54111366.

It is a super-2 number, since 2×663111450² = 879433590242205000, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (663111451) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 2343009 + ... + 2343291.

It is an arithmetic number, because the mean of its divisors is an integer number (12818624).

Almost surely, 2^663111450 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 663111450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (922940928).

663111450 is an abundant number, since it is smaller than the sum of its proper divisors (1182770406).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

663111450 is a wasteful number, since it uses less digits than its factorization.

663111450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 469 (or 461 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 663111450 is about 25750.9504678954. The cubic root of 663111450 is about 872.0248121955.

It can be divided in two parts, 6631 and 11450, that added together give a palindrome (18081).

The spelling of 663111450 in words is "six hundred sixty-three million, one hundred eleven thousand, four hundred fifty".