610881 has 4 divisors (see below), whose sum is σ = 814512. Its totient is φ = 407252.

The previous prime is 610879. The next prime is 610891. The reversal of 610881 is 188016.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 610881 - 2¹ = 610879 is a prime.

It is a super-2 number, since 2×610881² = 746351192322, which contains 22 as substring.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (610801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 101811 + ... + 101816.

It is an arithmetic number, because the mean of its divisors is an integer number (203628).

2⁶¹⁰⁸⁸¹ is an apocalyptic number.

It is an amenable number.

610881 is a deficient number, since it is larger than the sum of its proper divisors (203631).

610881 is a wasteful number, since it uses less digits than its factorization.

610881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203630.

The product of its (nonzero) digits is 384, while the sum is 24.

The square root of 610881 is about 781.5887665518. The cubic root of 610881 is about 84.8500701840.

Adding to 610881 its reverse (188016), we get a palindrome (798897).

The spelling of 610881 in words is "six hundred ten thousand, eight hundred eighty-one".