669332213 has 16 divisors (see below), whose sum is σ = 739879296. Its totient is φ = 600445440.

The previous prime is 669332189. The next prime is 669332219. The reversal of 669332213 is 312233966.

It is a cyclic number.

It is not a de Polignac number, because 669332213 - 2¹⁰ = 669331189 is a prime.

It is a super-2 number, since 2×669332213² = 896011222718954738, which contains 22 as substring.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (669332219) 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, 380945 + ... + 382697.

It is an arithmetic number, because the mean of its divisors is an integer number (46242456).

Almost surely, 2^669332213 is an apocalyptic number.

It is an amenable number.

669332213 is a deficient number, since it is larger than the sum of its proper divisors (70547083).

669332213 is a wasteful number, since it uses less digits than its factorization.

669332213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2204.

The product of its digits is 34992, while the sum is 35.

The square root of 669332213 is about 25871.4555639995. The cubic root of 669332213 is about 874.7432010490.

The spelling of 669332213 in words is "six hundred sixty-nine million, three hundred thirty-two thousand, two hundred thirteen".