61116663 has 8 divisors (see below), whose sum is σ = 82705408. Its totient is φ = 40136184.

The previous prime is 61116661. The next prime is 61116677. The reversal of 61116663 is 36661116.

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

It is not a de Polignac number, because 61116663 - 2¹ = 61116661 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 61116663.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61116661) 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, 151831 + ... + 152232.

It is an arithmetic number, because the mean of its divisors is an integer number (10338176).

Almost surely, 2^61116663 is an apocalyptic number.

61116663 is a deficient number, since it is larger than the sum of its proper divisors (21588745).

61116663 is a wasteful number, since it uses less digits than its factorization.

61116663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304133.

The product of its digits is 3888, while the sum is 30.

The square root of 61116663 is about 7817.7146916474. The cubic root of 61116663 is about 393.9005112679.

Adding to 61116663 its reverse (36661116), we get a palindrome (97777779).

The spelling of 61116663 in words is "sixty-one million, one hundred sixteen thousand, six hundred sixty-three".