113621617 has 2 divisors, whose sum is σ = 113621618. Its totient is φ = 113621616.

The previous prime is 113621593. The next prime is 113621647. The reversal of 113621617 is 716126311.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 68409441 + 45212176 = 8271^2 + 6724^2 .

It is an emirp because it is prime and its reverse (716126311) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-113621617 is a prime.

It is not a weakly prime, because it can be changed into another prime (113621647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56810808 + 56810809.

It is an arithmetic number, because the mean of its divisors is an integer number (56810809).

Almost surely, 2^113621617 is an apocalyptic number.

It is an amenable number.

113621617 is a deficient number, since it is larger than the sum of its proper divisors (1).

113621617 is an equidigital number, since it uses as much as digits as its factorization.

113621617 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1512, while the sum is 28.

The square root of 113621617 is about 10659.3441167832. The cubic root of 113621617 is about 484.3437001044.

Adding to 113621617 its reverse (716126311), we get a palindrome (829747928).

The spelling of 113621617 in words is "one hundred thirteen million, six hundred twenty-one thousand, six hundred seventeen".