61995611 has 2 divisors, whose sum is σ = 61995612. Its totient is φ = 61995610.

The previous prime is 61995599. The next prime is 61995631. The reversal of 61995611 is 11659916.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61995611 - 2⁶ = 61995547 is a prime.

It is not a weakly prime, because it can be changed into another prime (61995631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30997805 + 30997806.

It is an arithmetic number, because the mean of its divisors is an integer number (30997806).

Almost surely, 2^61995611 is an apocalyptic number.

61995611 is a deficient number, since it is larger than the sum of its proper divisors (1).

61995611 is an equidigital number, since it uses as much as digits as its factorization.

61995611 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14580, while the sum is 38.

The square root of 61995611 is about 7873.7291673006. The cubic root of 61995611 is about 395.7798214002.

The spelling of 61995611 in words is "sixty-one million, nine hundred ninety-five thousand, six hundred eleven".