669768867966 has 64 divisors (see below), whose sum is σ = 1471880906496. Its totient is φ = 201496435200.

The previous prime is 669768867959. The next prime is 669768867973.

669768867966 is nontrivially palindromic in base 10.

It is an interprime number because it is at equal distance from previous prime (669768867959) and next prime (669768867973).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7036705 + ... + 7131251.

It is an arithmetic number, because the mean of its divisors is an integer number (22998139164).

Almost surely, 2^669768867966 is an apocalyptic number.

669768867966 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

669768867966 is an abundant number, since it is smaller than the sum of its proper divisors (802112038530).

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

669768867966 is a wasteful number, since it uses less digits than its factorization.

669768867966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95337.

The product of its digits is 11851370496, while the sum is 84.

The spelling of 669768867966 in words is "six hundred sixty-nine billion, seven hundred sixty-eight million, eight hundred sixty-seven thousand, nine hundred sixty-six".