669040300 has 72 divisors (see below), whose sum is σ = 1490904576. Its totient is φ = 260477760.

The previous prime is 669040279. The next prime is 669040303. The reversal of 669040300 is 3040966.

It is a super-2 number, since 2×669040300² = 895229846048180000, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (669040303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1329849 + ... + 1330351.

It is an arithmetic number, because the mean of its divisors is an integer number (20707008).

Almost surely, 2^669040300 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 669040300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (745452288).

669040300 is an abundant number, since it is smaller than the sum of its proper divisors (821864276).

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

669040300 is a wasteful number, since it uses less digits than its factorization.

669040300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 847 (or 840 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 28.

The square root of 669040300 is about 25865.8133450313. The cubic root of 669040300 is about 874.6160165520.

The spelling of 669040300 in words is "six hundred sixty-nine million, forty thousand, three hundred".