61706611 has 2 divisors, whose sum is σ = 61706612. Its totient is φ = 61706610.

The previous prime is 61706609. The next prime is 61706621. The reversal of 61706611 is 11660716.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61706611 - 2¹ = 61706609 is a prime.

It is a super-2 number, since 2×61706611² = 7615411682210642, which contains 22 as substring.

Together with 61706609, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 61706611.

It is not a weakly prime, because it can be changed into another prime (61706621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30853305 + 30853306.

It is an arithmetic number, because the mean of its divisors is an integer number (30853306).

Almost surely, 2^61706611 is an apocalyptic number.

61706611 is a deficient number, since it is larger than the sum of its proper divisors (1).

61706611 is an equidigital number, since it uses as much as digits as its factorization.

61706611 is an odious number, because the sum of its binary digits is odd.

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

The square root of 61706611 is about 7855.3555616535. The cubic root of 61706611 is about 395.1638715457.

The spelling of 61706611 in words is "sixty-one million, seven hundred six thousand, six hundred eleven".