669303966 has 16 divisors (see below), whose sum is σ = 1343700864. Its totient is φ = 222252504.

The previous prime is 669303953. The next prime is 669303983.

669303966 is nontrivially palindromic in base 10.

It is a super-3 number, since 3×669303966³ (a number of 27 digits) contains 333 as substring.

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, 210496 + ... + 213651.

It is an arithmetic number, because the mean of its divisors is an integer number (83981304).

Almost surely, 2^669303966 is an apocalyptic number.

669303966 is an abundant number, since it is smaller than the sum of its proper divisors (674396898).

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

669303966 is a wasteful number, since it uses less digits than its factorization.

669303966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 424415.

The product of its (nonzero) digits is 944784, while the sum is 48.

The square root of 669303966 is about 25870.9096477105. The cubic root of 669303966 is about 874.7308956406.

The spelling of 669303966 in words is "six hundred sixty-nine million, three hundred three thousand, nine hundred sixty-six".