665252052 has 24 divisors (see below), whose sum is σ = 1553487936. Its totient is φ = 221574528.

The previous prime is 665252051. The next prime is 665252059. The reversal of 665252052 is 250252566.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (665252051) 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, 5808 + ... + 36935.

It is an arithmetic number, because the mean of its divisors is an integer number (64728664).

Almost surely, 2^665252052 is an apocalyptic number.

It is an amenable number.

665252052 is an abundant number, since it is smaller than the sum of its proper divisors (888235884).

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

665252052 is a wasteful number, since it uses less digits than its factorization.

665252052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44047 (or 44045 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 33.

The square root of 665252052 is about 25792.4805321241. The cubic root of 665252052 is about 872.9621373134.

The spelling of 665252052 in words is "six hundred sixty-five million, two hundred fifty-two thousand, fifty-two".