1066972005 has 24 divisors (see below), whose sum is σ = 2017548000. Its totient is φ = 517319520.

The previous prime is 1066971947. The next prime is 1066972009. The reversal of 1066972005 is 5002796601.

It is not a de Polignac number, because 1066972005 - 2¹¹ = 1066969957 is a prime.

It is a super-2 number, since 2×1066972005² = 2276858518907440050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1066972009) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1077255 + ... + 1078244.

It is an arithmetic number, because the mean of its divisors is an integer number (84064500).

Almost surely, 2^1066972005 is an apocalyptic number.

1066972005 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1066972005 is a deficient number, since it is larger than the sum of its proper divisors (950575995).

1066972005 is a wasteful number, since it uses less digits than its factorization.

1066972005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2155521 (or 2155518 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 36.

The square root of 1066972005 is about 32664.5374221035. The cubic root of 1066972005 is about 1021.8433937423.

The spelling of 1066972005 in words is "one billion, sixty-six million, nine hundred seventy-two thousand, five".