610876561 has 8 divisors (see below), whose sum is σ = 636558120. Its totient is φ = 585502848.

The previous prime is 610876559. The next prime is 610876571. The reversal of 610876561 is 165678016.

It can be written as a sum of positive squares in 4 ways, for example, as 232379536 + 378497025 = 15244^2 + 19455^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 610876561 - 2¹ = 610876559 is a prime.

It is not an unprimeable number, because it can be changed into a prime (610876571) 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 7 ways as a sum of consecutive naturals, for example, 72906 + ... + 80851.

It is an arithmetic number, because the mean of its divisors is an integer number (79569765).

Almost surely, 2^610876561 is an apocalyptic number.

It is an amenable number.

610876561 is a deficient number, since it is larger than the sum of its proper divisors (25681559).

610876561 is a wasteful number, since it uses less digits than its factorization.

610876561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153923.

The product of its (nonzero) digits is 60480, while the sum is 40.

The square root of 610876561 is about 24715.9171587866. The cubic root of 610876561 is about 848.4986466095.

The spelling of 610876561 in words is "six hundred ten million, eight hundred seventy-six thousand, five hundred sixty-one".