668095599 has 4 divisors (see below), whose sum is σ = 890794136. Its totient is φ = 445397064.

The previous prime is 668095583. The next prime is 668095619. The reversal of 668095599 is 995590866.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 668095599 - 2⁴ = 668095583 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 (668095399) 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 3 ways as a sum of consecutive naturals, for example, 111349264 + ... + 111349269.

It is an arithmetic number, because the mean of its divisors is an integer number (222698534).

Almost surely, 2^668095599 is an apocalyptic number.

668095599 is a deficient number, since it is larger than the sum of its proper divisors (222698537).

668095599 is a wasteful number, since it uses less digits than its factorization.

668095599 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222698536.

The product of its (nonzero) digits is 5248800, while the sum is 57.

The square root of 668095599 is about 25847.5453186565. The cubic root of 668095599 is about 874.2041630229.

The spelling of 668095599 in words is "six hundred sixty-eight million, ninety-five thousand, five hundred ninety-nine".