61922689 has 2 divisors, whose sum is σ = 61922690. Its totient is φ = 61922688.

The previous prime is 61922639. The next prime is 61922701. The reversal of 61922689 is 98622916.

61922689 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 59985025 + 1937664 = 7745^2 + 1392^2 .

It is a cyclic number.

It is not a de Polignac number, because 61922689 - 2¹⁹ = 61398401 is a prime.

It is not a weakly prime, because it can be changed into another prime (61922639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30961344 + 30961345.

It is an arithmetic number, because the mean of its divisors is an integer number (30961345).

Almost surely, 2^61922689 is an apocalyptic number.

It is an amenable number.

61922689 is a deficient number, since it is larger than the sum of its proper divisors (1).

61922689 is an equidigital number, since it uses as much as digits as its factorization.

61922689 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 93312, while the sum is 43.

The square root of 61922689 is about 7869.0970892473. The cubic root of 61922689 is about 395.6245825644.

The spelling of 61922689 in words is "sixty-one million, nine hundred twenty-two thousand, six hundred eighty-nine".