669117306 has 96 divisors (see below), whose sum is σ = 1593768960. Its totient is φ = 185640000.

The previous prime is 669117283. The next prime is 669117329. The reversal of 669117306 is 603711966.

It is an interprime number because it is at equal distance from previous prime (669117283) and next prime (669117329).

It is a Harshad number since it is a multiple of its sum of digits (39).

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 2665681 + ... + 2665931.

It is an arithmetic number, because the mean of its divisors is an integer number (16601760).

Almost surely, 2^669117306 is an apocalyptic number.

669117306 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 669117306, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (796884480).

669117306 is an abundant number, since it is smaller than the sum of its proper divisors (924651654).

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

669117306 is a wasteful number, since it uses less digits than its factorization.

669117306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 532 (or 519 counting only the distinct ones).

The product of its (nonzero) digits is 40824, while the sum is 39.

The square root of 669117306 is about 25867.3018693485. The cubic root of 669117306 is about 874.6495711312.

The spelling of 669117306 in words is "six hundred sixty-nine million, one hundred seventeen thousand, three hundred six".