61343563 has 2 divisors, whose sum is σ = 61343564. Its totient is φ = 61343562.

The previous prime is 61343537. The next prime is 61343591. The reversal of 61343563 is 36534316.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61343563 is a prime.

It is not a weakly prime, because it can be changed into another prime (61343593) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30671781 + 30671782.

It is an arithmetic number, because the mean of its divisors is an integer number (30671782).

Almost surely, 2^61343563 is an apocalyptic number.

61343563 is a deficient number, since it is larger than the sum of its proper divisors (1).

61343563 is an equidigital number, since it uses as much as digits as its factorization.

61343563 is an evil number, because the sum of its binary digits is even.

The product of its digits is 19440, while the sum is 31.

The square root of 61343563 is about 7832.2131610420. The cubic root of 61343563 is about 394.3873705750.

Adding to 61343563 its reverse (36534316), we get a palindrome (97877879).

The spelling of 61343563 in words is "sixty-one million, three hundred forty-three thousand, five hundred sixty-three".