663229020 has 24 divisors (see below), whose sum is σ = 1857041424. Its totient is φ = 176861056.

The previous prime is 663229009. The next prime is 663229057. The reversal of 663229020 is 20922366.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5526849 + ... + 5526968.

It is an arithmetic number, because the mean of its divisors is an integer number (77376726).

Almost surely, 2^663229020 is an apocalyptic number.

663229020 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

663229020 is an abundant number, since it is smaller than the sum of its proper divisors (1193812404).

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

663229020 is a wasteful number, since it uses less digits than its factorization.

663229020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11053829 (or 11053827 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 30.

The square root of 663229020 is about 25753.2331950767. The cubic root of 663229020 is about 872.0763459654.

The spelling of 663229020 in words is "six hundred sixty-three million, two hundred twenty-nine thousand, twenty".