61716211 has 2 divisors, whose sum is σ = 61716212. Its totient is φ = 61716210.

The previous prime is 61716203. The next prime is 61716271. The reversal of 61716211 is 11261716.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61716211 - 2³ = 61716203 is a prime.

It is not a weakly prime, because it can be changed into another prime (61716271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30858105 + 30858106.

It is an arithmetic number, because the mean of its divisors is an integer number (30858106).

Almost surely, 2^61716211 is an apocalyptic number.

61716211 is a deficient number, since it is larger than the sum of its proper divisors (1).

61716211 is an equidigital number, since it uses as much as digits as its factorization.

61716211 is an evil number, because the sum of its binary digits is even.

The product of its digits is 504, while the sum is 25.

The square root of 61716211 is about 7855.9665859778. The cubic root of 61716211 is about 395.1843630100.

Adding to 61716211 its reverse (11261716), we get a palindrome (72977927).

The spelling of 61716211 in words is "sixty-one million, seven hundred sixteen thousand, two hundred eleven".