1066506064 has 20 divisors (see below), whose sum is σ = 2225306356. Its totient is φ = 492233472.

The previous prime is 1066506061. The next prime is 1066506107. The reversal of 1066506064 is 4606056601.

It can be written as a sum of positive squares in 2 ways, for example, as 320123664 + 746382400 = 17892^2 + 27320^2 .

It is a super-2 number, since 2×1066506064² = 2274870369097544192, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1066506061) 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, 2563509 + ... + 2563924.

Almost surely, 2^1066506064 is an apocalyptic number.

It is an amenable number.

1066506064 is an abundant number, since it is smaller than the sum of its proper divisors (1158800292).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1066506064 is a wasteful number, since it uses less digits than its factorization.

1066506064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5127454 (or 5127448 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 1066506064 is about 32657.4044283988. The cubic root of 1066506064 is about 1021.6946275599.

The spelling of 1066506064 in words is "one billion, sixty-six million, five hundred six thousand, sixty-four".