1065505212 has 72 divisors (see below), whose sum is σ = 2831922800. Its totient is φ = 346446720.

The previous prime is 1065505159. The next prime is 1065505229. The reversal of 1065505212 is 2125055601.

1065505212 is a `hidden beast` number, since 1 + 0 + 655 + 0 + 5 + 2 + 1 + 2 = 666.

It is a super-2 number, since 2×1065505212² = 2270602713598329888, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 178614 + ... + 184482.

Almost surely, 2^1065505212 is an apocalyptic number.

1065505212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1065505212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1415961400).

1065505212 is an abundant number, since it is smaller than the sum of its proper divisors (1766417588).

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

1065505212 is a wasteful number, since it uses less digits than its factorization.

1065505212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5964 (or 5915 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 27.

The square root of 1065505212 is about 32642.0773236018. The cubic root of 1065505212 is about 1021.3749278149.

The spelling of 1065505212 in words is "one billion, sixty-five million, five hundred five thousand, two hundred twelve".