669266706 has 16 divisors (see below), whose sum is σ = 1369662624. Its totient is φ = 217900704.

The previous prime is 669266683. The next prime is 669266707. The reversal of 669266706 is 607662966.

It is not an unprimeable number, because it can be changed into a prime (669266707) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1296771 + ... + 1297286.

It is an arithmetic number, because the mean of its divisors is an integer number (85603914).

Almost surely, 2^669266706 is an apocalyptic number.

669266706 is an abundant number, since it is smaller than the sum of its proper divisors (700395918).

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

669266706 is a wasteful number, since it uses less digits than its factorization.

669266706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2594105.

The product of its (nonzero) digits is 979776, while the sum is 48.

The square root of 669266706 is about 25870.1895238516. The cubic root of 669266706 is about 874.7146633158.

The spelling of 669266706 in words is "six hundred sixty-nine million, two hundred sixty-six thousand, seven hundred six".