1066087801 has 9 divisors (see below), whose sum is σ = 1079945391. Its totient is φ = 1052407032.

The previous prime is 1066087783. The next prime is 1066087807. The reversal of 1066087801 is 1087806601.

The square root of 1066087801 is 32651.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 59675625 + 1006412176 = 7725^2 + 31724^2 .

It is not a de Polignac number, because 1066087801 - 2¹⁵ = 1066055033 is a prime.

It is a super-2 number, since 2×1066087801² = 2273086398882031202, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1066087807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 3362895 + ... + 3363211.

Almost surely, 2^1066087801 is an apocalyptic number.

1066087801 is the 32651-st square number.

1066087801 is the 16326-th centered octagonal number.

It is an amenable number.

1066087801 is a deficient number, since it is larger than the sum of its proper divisors (13857590).

1066087801 is an frugal number, since it uses more digits than its factorization.

1066087801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 840 (or 420 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 37.

The cubic root of 1066087801 is about 1021.5610471547.

The spelling of 1066087801 in words is "one billion, sixty-six million, eighty-seven thousand, eight hundred one".