669020966 has 4 divisors (see below), whose sum is σ = 1003531452. Its totient is φ = 334510482.

The previous prime is 669020959. The next prime is 669020971.

It is a happy number.

669020966 is nontrivially palindromic in base 10.

669020966 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 167255240 + ... + 167255243.

It is an arithmetic number, because the mean of its divisors is an integer number (250882863).

Almost surely, 2^669020966 is an apocalyptic number.

669020966 is a deficient number, since it is larger than the sum of its proper divisors (334510486).

669020966 is a wasteful number, since it uses less digits than its factorization.

669020966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 334510485.

The product of its (nonzero) digits is 209952, while the sum is 44.

The square root of 669020966 is about 25865.4396057751. The cubic root of 669020966 is about 874.6075915544.

The spelling of 669020966 in words is "six hundred sixty-nine million, twenty thousand, nine hundred sixty-six".