1066644061 has 8 divisors (see below), whose sum is σ = 1219348544. Its totient is φ = 914021280.

The previous prime is 1066644053. The next prime is 1066644077. The reversal of 1066644061 is 1604466601.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1066644061 - 2³ = 1066644053 is a prime.

It is a super-2 number, since 2×1066644061² = 2275459105733143442, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1066644031) by changing a digit.

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, 10726 + ... + 47416.

It is an arithmetic number, because the mean of its divisors is an integer number (152418568).

Almost surely, 2^1066644061 is an apocalyptic number.

It is an amenable number.

1066644061 is a deficient number, since it is larger than the sum of its proper divisors (152704483).

1066644061 is an equidigital number, since it uses as much as digits as its factorization.

1066644061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40851.

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 1066644061 is about 32659.5171580965. The cubic root of 1066644061 is about 1021.7386919173.

The spelling of 1066644061 in words is "one billion, sixty-six million, six hundred forty-four thousand, sixty-one".