1066644413 has 8 divisors (see below), whose sum is σ = 1140355008. Its totient is φ = 994152384.

The previous prime is 1066644407. The next prime is 1066644419. The reversal of 1066644413 is 3144466601.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1066644407) and next prime (1066644419).

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

It is not a de Polignac number, because 1066644413 - 2¹⁸ = 1066382269 is a prime.

It is a super-2 number, since 2×1066644413² = 2275460607568229138, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1066644419) 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, 302831 + ... + 306332.

It is an arithmetic number, because the mean of its divisors is an integer number (142544376).

Almost surely, 2^1066644413 is an apocalyptic number.

It is an amenable number.

1066644413 is a deficient number, since it is larger than the sum of its proper divisors (73710595).

1066644413 is a wasteful number, since it uses less digits than its factorization.

1066644413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 609283.

The product of its (nonzero) digits is 41472, while the sum is 35.

The square root of 1066644413 is about 32659.5225470306. The cubic root of 1066644413 is about 1021.7388043109.

The spelling of 1066644413 in words is "one billion, sixty-six million, six hundred forty-four thousand, four hundred thirteen".