1066645432 has 8 divisors (see below), whose sum is σ = 1999960200. Its totient is φ = 533322712.

The previous prime is 1066645429. The next prime is 1066645477. The reversal of 1066645432 is 2345466601.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×1066645432² = 2275464955212933248, which contains 22 as substring.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 1066645391 and 1066645400.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66665332 + ... + 66665347.

It is an arithmetic number, because the mean of its divisors is an integer number (249995025).

Almost surely, 2^1066645432 is an apocalyptic number.

It is an amenable number.

1066645432 is a deficient number, since it is larger than the sum of its proper divisors (933314768).

1066645432 is a wasteful number, since it uses less digits than its factorization.

1066645432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133330685 (or 133330681 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 37.

The square root of 1066645432 is about 32659.5381473774. The cubic root of 1066645432 is about 1021.7391296775.

The spelling of 1066645432 in words is "one billion, sixty-six million, six hundred forty-five thousand, four hundred thirty-two".