665069495 has 32 divisors (see below), whose sum is σ = 890144640. Its totient is φ = 474439680.

The previous prime is 665069473. The next prime is 665069549. The reversal of 665069495 is 594960566.

It is a de Polignac number, because none of the positive numbers 2^k-665069495 is a prime.

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 in 31 ways as a sum of consecutive naturals, for example, 211535 + ... + 214655.

It is an arithmetic number, because the mean of its divisors is an integer number (27817020).

Almost surely, 2^665069495 is an apocalyptic number.

665069495 is a deficient number, since it is larger than the sum of its proper divisors (225075145).

665069495 is a wasteful number, since it uses less digits than its factorization.

665069495 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3275.

The product of its (nonzero) digits is 1749600, while the sum is 50.

The square root of 665069495 is about 25788.9413315087. The cubic root of 665069495 is about 872.8822778936.

The spelling of 665069495 in words is "six hundred sixty-five million, sixty-nine thousand, four hundred ninety-five".