646160669 has 8 divisors (see below), whose sum is σ = 805603008. Its totient is φ = 503501760.

The previous prime is 646160659. The next prime is 646160681. The reversal of 646160669 is 966061646.

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 646160669 - 2²⁴ = 629383453 is a prime.

It is a super-2 number, since 2×646160669² = 835047220325055122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (646160659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4195772 + ... + 4195925.

It is an arithmetic number, because the mean of its divisors is an integer number (100700376).

Almost surely, 2^646160669 is an apocalyptic number.

It is an amenable number.

646160669 is a deficient number, since it is larger than the sum of its proper divisors (159442339).

646160669 is a wasteful number, since it uses less digits than its factorization.

646160669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8391715.

The product of its (nonzero) digits is 279936, while the sum is 44.

The square root of 646160669 is about 25419.6905764016. The cubic root of 646160669 is about 864.5302087729.

The spelling of 646160669 in words is "six hundred forty-six million, one hundred sixty thousand, six hundred sixty-nine".