669670967 has 8 divisors (see below), whose sum is σ = 798614016. Its totient is φ = 549046872.

The previous prime is 669670909. The next prime is 669671027. The reversal of 669670967 is 769076966.

It is a happy number.

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 669670967 - 2¹² = 669666871 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (669670907) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 2079563 + ... + 2079884.

It is an arithmetic number, because the mean of its divisors is an integer number (99826752).

Almost surely, 2^669670967 is an apocalyptic number.

669670967 is a deficient number, since it is larger than the sum of its proper divisors (128943049).

669670967 is a wasteful number, since it uses less digits than its factorization.

669670967 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4159477.

The product of its (nonzero) digits is 5143824, while the sum is 56.

The square root of 669670967 is about 25878.0016036788. The cubic root of 669670967 is about 874.8907475022.

The spelling of 669670967 in words is "six hundred sixty-nine million, six hundred seventy thousand, nine hundred sixty-seven".