669362691 has 8 divisors (see below), whose sum is σ = 892633104. Its totient is φ = 446167040.

The previous prime is 669362689. The next prime is 669362693. The reversal of 669362691 is 196263966.

It is a happy number.

669362691 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (669362689) and next prime (669362693).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 669362691 - 2¹ = 669362689 is a prime.

It is a super-2 number, since 2×669362691² = 896092824205522962, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 669362691.

It is not an unprimeable number, because it can be changed into a prime (669362693) 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, 7411 + ... + 37331.

It is an arithmetic number, because the mean of its divisors is an integer number (111579138).

Almost surely, 2^669362691 is an apocalyptic number.

669362691 is a deficient number, since it is larger than the sum of its proper divisors (223270413).

669362691 is a wasteful number, since it uses less digits than its factorization.

669362691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37381.

The product of its digits is 629856, while the sum is 48.

The square root of 669362691 is about 25872.0445848410. The cubic root of 669362691 is about 874.7564779730.

The spelling of 669362691 in words is "six hundred sixty-nine million, three hundred sixty-two thousand, six hundred ninety-one".