61611313 has 8 divisors (see below), whose sum is σ = 63550080. Its totient is φ = 59698800.

The previous prime is 61611311. The next prime is 61611323. The reversal of 61611313 is 31311616.

It is a happy number.

61611313 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 61611313 - 2¹ = 61611311 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61611311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1743 + ... + 11236.

It is an arithmetic number, because the mean of its divisors is an integer number (7943760).

Almost surely, 2^61611313 is an apocalyptic number.

It is an amenable number.

61611313 is a deficient number, since it is larger than the sum of its proper divisors (1938767).

61611313 is a wasteful number, since it uses less digits than its factorization.

61611313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13127.

The product of its digits is 324, while the sum is 22.

The square root of 61611313 is about 7849.2874198872. The cubic root of 61611313 is about 394.9603399800.

Adding to 61611313 its reverse (31311616), we get a palindrome (92922929).

The spelling of 61611313 in words is "sixty-one million, six hundred eleven thousand, three hundred thirteen".