665132654 has 16 divisors (see below), whose sum is σ = 1015716240. Its totient is φ = 326578560.

The previous prime is 665132647. The next prime is 665132687. The reversal of 665132654 is 456231566.

It is a happy number.

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 7 ways as a sum of consecutive naturals, for example, 76262 + ... + 84534.

It is an arithmetic number, because the mean of its divisors is an integer number (63482265).

Almost surely, 2^665132654 is an apocalyptic number.

665132654 is a deficient number, since it is larger than the sum of its proper divisors (350583586).

665132654 is a wasteful number, since it uses less digits than its factorization.

665132654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8995.

The product of its digits is 129600, while the sum is 38.

The square root of 665132654 is about 25790.1658389395. The cubic root of 665132654 is about 872.9099084029.

The spelling of 665132654 in words is "six hundred sixty-five million, one hundred thirty-two thousand, six hundred fifty-four".