1066646063 has 12 divisors (see below), whose sum is σ = 1245420360. Its totient is φ = 910858032.

The previous prime is 1066646039. The next prime is 1066646069. The reversal of 1066646063 is 3606466601.

It is not a de Polignac number, because 1066646063 - 2¹² = 1066641967 is a prime.

It is a super-2 number, since 2×1066646063² = 2275467647426799938, 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 (1066646069) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27281 + ... + 53642.

It is an arithmetic number, because the mean of its divisors is an integer number (103785030).

Almost surely, 2^1066646063 is an apocalyptic number.

1066646063 is a deficient number, since it is larger than the sum of its proper divisors (178774297).

1066646063 is an equidigital number, since it uses as much as digits as its factorization.

1066646063 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81206 (or 81199 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 38.

The square root of 1066646063 is about 32659.5478076473. The cubic root of 1066646063 is about 1021.7393311557.

The spelling of 1066646063 in words is "one billion, sixty-six million, six hundred forty-six thousand, sixty-three".