664667095 has 8 divisors (see below), whose sum is σ = 825104160. Its totient is φ = 513397920.

The previous prime is 664667089. The next prime is 664667099. The reversal of 664667095 is 590766466.

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

It is not a de Polignac number, because 664667095 - 2⁷ = 664666967 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (664667099) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2291811 + ... + 2292100.

It is an arithmetic number, because the mean of its divisors is an integer number (103138020).

Almost surely, 2^664667095 is an apocalyptic number.

664667095 is a deficient number, since it is larger than the sum of its proper divisors (160437065).

664667095 is a wasteful number, since it uses less digits than its factorization.

664667095 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4583945.

The product of its (nonzero) digits is 1632960, while the sum is 49.

The square root of 664667095 is about 25781.1383573340. The cubic root of 664667095 is about 872.7061966991.

The spelling of 664667095 in words is "six hundred sixty-four million, six hundred sixty-seven thousand, ninety-five".