61859971 has 2 divisors, whose sum is σ = 61859972. Its totient is φ = 61859970.

The previous prime is 61859933. The next prime is 61860013. The reversal of 61859971 is 17995816.

It is a happy number.

61859971 is nontrivially palindromic in base 9.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61859971 - 2¹¹ = 61857923 is a prime.

It is not a weakly prime, because it can be changed into another prime (61859921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30929985 + 30929986.

It is an arithmetic number, because the mean of its divisors is an integer number (30929986).

Almost surely, 2^61859971 is an apocalyptic number.

61859971 is a deficient number, since it is larger than the sum of its proper divisors (1).

61859971 is an equidigital number, since it uses as much as digits as its factorization.

61859971 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 136080, while the sum is 46.

The square root of 61859971 is about 7865.1109973096. The cubic root of 61859971 is about 395.4909688339.

The spelling of 61859971 in words is "sixty-one million, eight hundred fifty-nine thousand, nine hundred seventy-one".