1066644146 has 8 divisors (see below), whose sum is σ = 1600229424. Its totient is φ = 533234340.

The previous prime is 1066644143. The next prime is 1066644149. The reversal of 1066644146 is 6414466601.

It is an interprime number because it is at equal distance from previous prime (1066644143) and next prime (1066644149).

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

It is a super-2 number, since 2×1066644146² = 2275459468392138632, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1066644143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27440 + ... + 53723.

It is an arithmetic number, because the mean of its divisors is an integer number (200028678).

Almost surely, 2^1066644146 is an apocalyptic number.

1066644146 is a deficient number, since it is larger than the sum of its proper divisors (533585278).

1066644146 is an equidigital number, since it uses as much as digits as its factorization.

1066644146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87736.

The product of its (nonzero) digits is 82944, while the sum is 38.

The square root of 1066644146 is about 32659.5184594017. The cubic root of 1066644146 is about 1021.7387190578.

The spelling of 1066644146 in words is "one billion, sixty-six million, six hundred forty-four thousand, one hundred forty-six".