665043452 has 12 divisors (see below), whose sum is σ = 1192212336. Its totient is φ = 324411360.

The previous prime is 665043443. The next prime is 665043469. The reversal of 665043452 is 254340566.

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 3 ways as a sum of consecutive naturals, for example, 2027408 + ... + 2027735.

It is an arithmetic number, because the mean of its divisors is an integer number (99351028).

Almost surely, 2^665043452 is an apocalyptic number.

It is an amenable number.

665043452 is a deficient number, since it is larger than the sum of its proper divisors (527168884).

665043452 is a wasteful number, since it uses less digits than its factorization.

665043452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4055188 (or 4055186 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 35.

The square root of 665043452 is about 25788.4364008367. The cubic root of 665043452 is about 872.8708842121.

The spelling of 665043452 in words is "six hundred sixty-five million, forty-three thousand, four hundred fifty-two".