665434122 has 16 divisors (see below), whose sum is σ = 1366838112. Its totient is φ = 215816400.

The previous prime is 665434109. The next prime is 665434129. The reversal of 665434122 is 221434566.

It is not an unprimeable number, because it can be changed into a prime (665434129) 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, 1498504 + ... + 1498947.

It is an arithmetic number, because the mean of its divisors is an integer number (85427382).

Almost surely, 2^665434122 is an apocalyptic number.

665434122 is an abundant number, since it is smaller than the sum of its proper divisors (701403990).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

665434122 is a wasteful number, since it uses less digits than its factorization.

665434122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2997493.

The product of its digits is 34560, while the sum is 33.

The square root of 665434122 is about 25796.0098077203. The cubic root of 665434122 is about 873.0417691452.

Adding to 665434122 its reverse (221434566), we get a palindrome (886868688).

The spelling of 665434122 in words is "six hundred sixty-five million, four hundred thirty-four thousand, one hundred twenty-two".