611541663 has 8 divisors (see below), whose sum is σ = 863353008. Its totient is φ = 383712384.

The previous prime is 611541643. The next prime is 611541677. The reversal of 611541663 is 366145116.

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

It is not a de Polignac number, because 611541663 - 2⁵ = 611541631 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (611541643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5995456 + ... + 5995557.

It is an arithmetic number, because the mean of its divisors is an integer number (107919126).

Almost surely, 2^611541663 is an apocalyptic number.

611541663 is a deficient number, since it is larger than the sum of its proper divisors (251811345).

611541663 is a wasteful number, since it uses less digits than its factorization.

611541663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11991033.

The product of its digits is 12960, while the sum is 33.

The square root of 611541663 is about 24729.3684310781. The cubic root of 611541663 is about 848.8064739163.

Adding to 611541663 its reverse (366145116), we get a palindrome (977686779).

The spelling of 611541663 in words is "six hundred eleven million, five hundred forty-one thousand, six hundred sixty-three".