611863 has 6 divisors (see below), whose sum is σ = 711816. Its totient is φ = 524412.

The previous prime is 611839. The next prime is 611873. The reversal of 611863 is 368116.

611863 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-611863 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (611803) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6195 + ... + 6292.

It is an arithmetic number, because the mean of its divisors is an integer number (118636).

2⁶¹¹⁸⁶³ is an apocalyptic number.

611863 is a deficient number, since it is larger than the sum of its proper divisors (99953).

611863 is a wasteful number, since it uses less digits than its factorization.

611863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12501 (or 12494 counting only the distinct ones).

The product of its digits is 864, while the sum is 25.

The square root of 611863 is about 782.2167218872. The cubic root of 611863 is about 84.8955117464.

Adding to 611863 its reverse (368116), we get a palindrome (979979).

The spelling of 611863 in words is "six hundred eleven thousand, eight hundred sixty-three".