61711583 has 2 divisors, whose sum is σ = 61711584. Its totient is φ = 61711582.

The previous prime is 61711571. The next prime is 61711591. The reversal of 61711583 is 38511716.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61711583 - 2⁸ = 61711327 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61711883) 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, 30855791 + 30855792.

It is an arithmetic number, because the mean of its divisors is an integer number (30855792).

Almost surely, 2^61711583 is an apocalyptic number.

61711583 is a deficient number, since it is larger than the sum of its proper divisors (1).

61711583 is an equidigital number, since it uses as much as digits as its factorization.

61711583 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5040, while the sum is 32.

The square root of 61711583 is about 7855.6720272679. The cubic root of 61711583 is about 395.1744846819.

The spelling of 61711583 in words is "sixty-one million, seven hundred eleven thousand, five hundred eighty-three".