665662552 has 24 divisors (see below), whose sum is σ = 1279327500. Its totient is φ = 324706880.

The previous prime is 665662541. The next prime is 665662553. The reversal of 665662552 is 255266566.

665662552 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 665662499 and 665662508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (665662553) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11302 + ... + 38197.

Almost surely, 2^665662552 is an apocalyptic number.

It is an amenable number.

665662552 is a deficient number, since it is larger than the sum of its proper divisors (613664948).

665662552 is a wasteful number, since it uses less digits than its factorization.

665662552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49587 (or 49542 counting only the distinct ones).

The product of its digits is 648000, while the sum is 43.

The square root of 665662552 is about 25800.4370505618. The cubic root of 665662552 is about 873.1416568772.

The spelling of 665662552 in words is "six hundred sixty-five million, six hundred sixty-two thousand, five hundred fifty-two".