61116613 has 4 divisors (see below), whose sum is σ = 61157088. Its totient is φ = 61076140.

The previous prime is 61116611. The next prime is 61116617. The reversal of 61116613 is 31661116.

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 61116613 - 2¹ = 61116611 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61116611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17881 + ... + 21022.

It is an arithmetic number, because the mean of its divisors is an integer number (15289272).

Almost surely, 2^61116613 is an apocalyptic number.

It is an amenable number.

61116613 is a deficient number, since it is larger than the sum of its proper divisors (40475).

61116613 is a wasteful number, since it uses less digits than its factorization.

61116613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40474.

The product of its digits is 648, while the sum is 25.

The square root of 61116613 is about 7817.7114937813. The cubic root of 61116613 is about 393.9004038502.

Adding to 61116613 its reverse (31661116), we get a palindrome (92777729).

The spelling of 61116613 in words is "sixty-one million, one hundred sixteen thousand, six hundred thirteen".