1075712661 has 12 divisors (see below), whose sum is σ = 1563706092. Its totient is φ = 712573056.

The previous prime is 1075712633. The next prime is 1075712663. The reversal of 1075712661 is 1662175701.

1075712661 is a `hidden beast` number, since 1 + 0 + 7 + 571 + 26 + 61 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 635342436 + 440370225 = 25206^2 + 20985^2 .

It is not a de Polignac number, because 1075712661 - 2¹⁴ = 1075696277 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1075712663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 379236 + ... + 382061.

It is an arithmetic number, because the mean of its divisors is an integer number (130308841).

Almost surely, 2^1075712661 is an apocalyptic number.

It is an amenable number.

1075712661 is a deficient number, since it is larger than the sum of its proper divisors (487993431).

1075712661 is a wasteful number, since it uses less digits than its factorization.

1075712661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 761460 (or 761457 counting only the distinct ones).

The product of its (nonzero) digits is 17640, while the sum is 36.

The square root of 1075712661 is about 32798.0587992643. The cubic root of 1075712661 is about 1024.6261292821.

The spelling of 1075712661 in words is "one billion, seventy-five million, seven hundred twelve thousand, six hundred sixty-one".