1066361553 has 6 divisors (see below), whose sum is σ = 1540300034. Its totient is φ = 710907696.

The previous prime is 1066361551. The next prime is 1066361573. The reversal of 1066361553 is 3551636601.

1066361553 is a `hidden beast` number, since 1 + 0 + 6 + 636 + 15 + 5 + 3 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1030217409 + 36144144 = 32097^2 + 6012^2 .

It is not a de Polignac number, because 1066361553 - 2¹ = 1066361551 is a prime.

It is a super-2 number, since 2×1066361553² = 2274253923433143618, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1066361551) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 59242300 + ... + 59242317.

Almost surely, 2^1066361553 is an apocalyptic number.

It is an amenable number.

1066361553 is a deficient number, since it is larger than the sum of its proper divisors (473938481).

1066361553 is a wasteful number, since it uses less digits than its factorization.

1066361553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118484623 (or 118484620 counting only the distinct ones).

The product of its (nonzero) digits is 48600, while the sum is 36.

The square root of 1066361553 is about 32655.1918230471. The cubic root of 1066361553 is about 1021.6484791174.

The spelling of 1066361553 in words is "one billion, sixty-six million, three hundred sixty-one thousand, five hundred fifty-three".