669431226 has 8 divisors (see below), whose sum is σ = 1338862464. Its totient is φ = 223143740.

The previous prime is 669431221. The next prime is 669431251. The reversal of 669431226 is 622134966.

It is a sphenic number, since it is the product of 3 distinct primes.

669431226 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (669431221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55785930 + ... + 55785941.

It is an arithmetic number, because the mean of its divisors is an integer number (167357808).

Almost surely, 2^669431226 is an apocalyptic number.

669431226 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

669431226 is a wasteful number, since it uses less digits than its factorization.

669431226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111571876.

The product of its digits is 93312, while the sum is 39.

The square root of 669431226 is about 25873.3690500484. The cubic root of 669431226 is about 874.7863319370.

The spelling of 669431226 in words is "six hundred sixty-nine million, four hundred thirty-one thousand, two hundred twenty-six".