1075261661 has 16 divisors (see below), whose sum is σ = 1185891840. Its totient is φ = 970398000.

The previous prime is 1075261643. The next prime is 1075261669. The reversal of 1075261661 is 1661625701.

It is a cyclic number.

It is not a de Polignac number, because 1075261661 - 2²² = 1071067357 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1075261669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 104786 + ... + 114588.

It is an arithmetic number, because the mean of its divisors is an integer number (74118240).

Almost surely, 2^1075261661 is an apocalyptic number.

It is an amenable number.

1075261661 is a deficient number, since it is larger than the sum of its proper divisors (110630179).

1075261661 is a wasteful number, since it uses less digits than its factorization.

1075261661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10096.

The product of its (nonzero) digits is 15120, while the sum is 35.

The square root of 1075261661 is about 32791.1826715658. The cubic root of 1075261661 is about 1024.4829153934.

The spelling of 1075261661 in words is "one billion, seventy-five million, two hundred sixty-one thousand, six hundred sixty-one".