665106622 has 4 divisors (see below), whose sum is σ = 997659936. Its totient is φ = 332553310.

The previous prime is 665106613. The next prime is 665106649. The reversal of 665106622 is 226601566.

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

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 166276654 + ... + 166276657.

It is an arithmetic number, because the mean of its divisors is an integer number (249414984).

Almost surely, 2^665106622 is an apocalyptic number.

665106622 is a deficient number, since it is larger than the sum of its proper divisors (332553314).

665106622 is a wasteful number, since it uses less digits than its factorization.

665106622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 332553313.

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 665106622 is about 25789.6611455056. The cubic root of 665106622 is about 872.8985202550.

The spelling of 665106622 in words is "six hundred sixty-five million, one hundred six thousand, six hundred twenty-two".