1066644361 has 8 divisors (see below), whose sum is σ = 1070696448. Its totient is φ = 1062600000.

The previous prime is 1066644323. The next prime is 1066644407. The reversal of 1066644361 is 1634466601.

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 1066644361 - 2²⁵ = 1033089929 is a prime.

It is a super-2 number, since 2×1066644361² = 2275460385706196642, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1066644361.

It is not an unprimeable number, because it can be changed into a prime (1066654361) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 460396 + ... + 462706.

It is an arithmetic number, because the mean of its divisors is an integer number (133837056).

Almost surely, 2^1066644361 is an apocalyptic number.

It is an amenable number.

1066644361 is a deficient number, since it is larger than the sum of its proper divisors (4052087).

1066644361 is a wasteful number, since it uses less digits than its factorization.

1066644361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3863.

The product of its (nonzero) digits is 62208, while the sum is 37.

The square root of 1066644361 is about 32659.5217509381. The cubic root of 1066644361 is about 1021.7387877073.

The spelling of 1066644361 in words is "one billion, sixty-six million, six hundred forty-four thousand, three hundred sixty-one".