1066644344 has 32 divisors (see below), whose sum is σ = 2106810000. Its totient is φ = 504870912.

The previous prime is 1066644323. The next prime is 1066644407. The reversal of 1066644344 is 4434466601.

It is a super-2 number, since 2×1066644344² = 2275460313174380672, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a junction number, because it is equal to n+sod(n) for n = 1066644298 and 1066644307.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 386072 + ... + 388824.

Almost surely, 2^1066644344 is an apocalyptic number.

It is an amenable number.

1066644344 is a deficient number, since it is larger than the sum of its proper divisors (1040165656).

1066644344 is a wasteful number, since it uses less digits than its factorization.

1066644344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5327 (or 5323 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 38.

The square root of 1066644344 is about 32659.5214906771. The cubic root of 1066644344 is about 1021.7387822792.

The spelling of 1066644344 in words is "one billion, sixty-six million, six hundred forty-four thousand, three hundred forty-four".