1665566332 has 12 divisors (see below), whose sum is σ = 2922012576. Its totient is φ = 830705600.

The previous prime is 1665566327. The next prime is 1665566369. The reversal of 1665566332 is 2336655661.

It is a super-2 number, since 2×1665566332² = 5548222412583868448, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 517588 + ... + 520795.

It is an arithmetic number, because the mean of its divisors is an integer number (243501048).

Almost surely, 2^1665566332 is an apocalyptic number.

It is an amenable number.

1665566332 is a deficient number, since it is larger than the sum of its proper divisors (1256446244).

1665566332 is a wasteful number, since it uses less digits than its factorization.

1665566332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1038788 (or 1038786 counting only the distinct ones).

The product of its digits is 583200, while the sum is 43.

The square root of 1665566332 is about 40811.3505289889. The cubic root of 1665566332 is about 1185.3701258556.

The spelling of 1665566332 in words is "one billion, six hundred sixty-five million, five hundred sixty-six thousand, three hundred thirty-two".