669226020 has 48 divisors (see below), whose sum is σ = 1892042880. Its totient is φ = 176726016.

The previous prime is 669226013. The next prime is 669226027. The reversal of 669226020 is 20622966.

It is an interprime number because it is at equal distance from previous prime (669226013) and next prime (669226027).

It is not an unprimeable number, because it can be changed into a prime (669226027) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47965 + ... + 60324.

It is an arithmetic number, because the mean of its divisors is an integer number (39417560).

Almost surely, 2^669226020 is an apocalyptic number.

669226020 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

669226020 is an abundant number, since it is smaller than the sum of its proper divisors (1222816860).

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

669226020 is a wasteful number, since it uses less digits than its factorization.

669226020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108404 (or 108402 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 33.

The square root of 669226020 is about 25869.4031628099. The cubic root of 669226020 is about 874.6969377655.

Adding to 669226020 its reverse (20622966), we get a palindrome (689848986).

The spelling of 669226020 in words is "six hundred sixty-nine million, two hundred twenty-six thousand, twenty".