61983743 has 2 divisors, whose sum is σ = 61983744. Its totient is φ = 61983742.

The previous prime is 61983673. The next prime is 61983797. The reversal of 61983743 is 34738916.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61983743 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 61983743.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61983143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30991871 + 30991872.

It is an arithmetic number, because the mean of its divisors is an integer number (30991872).

Almost surely, 2^61983743 is an apocalyptic number.

61983743 is a deficient number, since it is larger than the sum of its proper divisors (1).

61983743 is an equidigital number, since it uses as much as digits as its factorization.

61983743 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 108864, while the sum is 41.

The square root of 61983743 is about 7872.9754857995. The cubic root of 61983743 is about 395.7545646946.

It can be divided in two parts, 61983 and 743, that added together give a palindrome (62726).

The spelling of 61983743 in words is "sixty-one million, nine hundred eighty-three thousand, seven hundred forty-three".