61789243 has 2 divisors, whose sum is σ = 61789244. Its totient is φ = 61789242.

The previous prime is 61789219. The next prime is 61789289. The reversal of 61789243 is 34298716.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61789243 - 2¹⁷ = 61658171 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 61789196 and 61789205.

It is not a weakly prime, because it can be changed into another prime (61784243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30894621 + 30894622.

It is an arithmetic number, because the mean of its divisors is an integer number (30894622).

Almost surely, 2^61789243 is an apocalyptic number.

61789243 is a deficient number, since it is larger than the sum of its proper divisors (1).

61789243 is an equidigital number, since it uses as much as digits as its factorization.

61789243 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72576, while the sum is 40.

The square root of 61789243 is about 7860.6133984569. The cubic root of 61789243 is about 395.3401822949.

The spelling of 61789243 in words is "sixty-one million, seven hundred eighty-nine thousand, two hundred forty-three".