61568701 has 2 divisors, whose sum is σ = 61568702. Its totient is φ = 61568700.

The previous prime is 61568699. The next prime is 61568707. The reversal of 61568701 is 10786516.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 61387225 + 181476 = 7835^2 + 426^2 .

It is a cyclic number.

It is not a de Polignac number, because 61568701 - 2¹ = 61568699 is a prime.

Together with 61568699, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61568707) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30784350 + 30784351.

It is an arithmetic number, because the mean of its divisors is an integer number (30784351).

Almost surely, 2^61568701 is an apocalyptic number.

It is an amenable number.

61568701 is a deficient number, since it is larger than the sum of its proper divisors (1).

61568701 is an equidigital number, since it uses as much as digits as its factorization.

61568701 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10080, while the sum is 34.

The square root of 61568701 is about 7846.5725638651. The cubic root of 61568701 is about 394.8692640033.

The spelling of 61568701 in words is "sixty-one million, five hundred sixty-eight thousand, seven hundred one".