665436622 has 16 divisors (see below), whose sum is σ = 1022757120. Its totient is φ = 324564408.

The previous prime is 665436613. The next prime is 665436623. The reversal of 665436622 is 226634566.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (665436623) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17329 + ... + 40387.

It is an arithmetic number, because the mean of its divisors is an integer number (63922320).

Almost surely, 2^665436622 is an apocalyptic number.

665436622 is a deficient number, since it is larger than the sum of its proper divisors (357320498).

665436622 is a wasteful number, since it uses less digits than its factorization.

665436622 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23415.

The product of its digits is 311040, while the sum is 40.

The square root of 665436622 is about 25796.0582647815. The cubic root of 665436622 is about 873.0428624674.

The spelling of 665436622 in words is "six hundred sixty-five million, four hundred thirty-six thousand, six hundred twenty-two".