610880861 has 4 divisors (see below), whose sum is σ = 611124000. Its totient is φ = 610637724.

The previous prime is 610880857. The next prime is 610880887. The reversal of 610880861 is 168088016.

610880861 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 610880861 - 2² = 610880857 is a prime.

It is a super-2 number, since 2×610880861² = 746350852672202642, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (610880801) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 117761 + ... + 122838.

It is an arithmetic number, because the mean of its divisors is an integer number (152781000).

Almost surely, 2^610880861 is an apocalyptic number.

It is an amenable number.

610880861 is a deficient number, since it is larger than the sum of its proper divisors (243139).

610880861 is a wasteful number, since it uses less digits than its factorization.

610880861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243138.

The product of its (nonzero) digits is 18432, while the sum is 38.

The square root of 610880861 is about 24716.0041471108. The cubic root of 610880861 is about 848.5006374839.

The spelling of 610880861 in words is "six hundred ten million, eight hundred eighty thousand, eight hundred sixty-one".