10761561 has 24 divisors (see below), whose sum is σ = 16912584. Its totient is φ = 6566400.

The previous prime is 10761547. The next prime is 10761563. The reversal of 10761561 is 16516701.

It can be written as a sum of positive squares in 4 ways, for example, as 2673225 + 8088336 = 1635^2 + 2844^2 .

It is not a de Polignac number, because 10761561 - 2⁵ = 10761529 is a prime.

It is a super-2 number, since 2×10761561² = 231622390313442, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (10761563) 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 23 ways as a sum of consecutive naturals, for example, 4711 + ... + 6611.

It is an arithmetic number, because the mean of its divisors is an integer number (704691).

Almost surely, 2^10761561 is an apocalyptic number.

It is an amenable number.

10761561 is a deficient number, since it is larger than the sum of its proper divisors (6151023).

10761561 is a wasteful number, since it uses less digits than its factorization.

10761561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1961 (or 1958 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 27.

The square root of 10761561 is about 3280.4818243667. The cubic root of 10761561 is about 220.7793365390.

The spelling of 10761561 in words is "ten million, seven hundred sixty-one thousand, five hundred sixty-one".