61827643 has 2 divisors, whose sum is σ = 61827644. Its totient is φ = 61827642.

The previous prime is 61827599. The next prime is 61827673. The reversal of 61827643 is 34672816.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61827643 - 2²⁵ = 28273211 is a prime.

It is not a weakly prime, because it can be changed into another prime (61827673) 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, 30913821 + 30913822.

It is an arithmetic number, because the mean of its divisors is an integer number (30913822).

Almost surely, 2^61827643 is an apocalyptic number.

61827643 is a deficient number, since it is larger than the sum of its proper divisors (1).

61827643 is an equidigital number, since it uses as much as digits as its factorization.

61827643 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 48384, while the sum is 37.

The square root of 61827643 is about 7863.0555765555. The cubic root of 61827643 is about 395.4220623467.

The spelling of 61827643 in words is "sixty-one million, eight hundred twenty-seven thousand, six hundred forty-three".