611423563 has 4 divisors (see below), whose sum is σ = 611475480. Its totient is φ = 611371648.

The previous prime is 611423543. The next prime is 611423597. The reversal of 611423563 is 365324116.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-611423563 is a prime.

It is a super-2 number, since 2×611423563² = 747677546783229938, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (611423543) 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, 1131 + ... + 34987.

It is an arithmetic number, because the mean of its divisors is an integer number (152868870).

Almost surely, 2^611423563 is an apocalyptic number.

611423563 is a deficient number, since it is larger than the sum of its proper divisors (51917).

611423563 is a wasteful number, since it uses less digits than its factorization.

611423563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51916.

The product of its digits is 12960, while the sum is 31.

The square root of 611423563 is about 24726.9804666886. The cubic root of 611423563 is about 848.7518303250.

Adding to 611423563 its reverse (365324116), we get a palindrome (976747679).

The spelling of 611423563 in words is "six hundred eleven million, four hundred twenty-three thousand, five hundred sixty-three".