61570063 has 2 divisors, whose sum is σ = 61570064. Its totient is φ = 61570062.

The previous prime is 61570043. The next prime is 61570081. The reversal of 61570063 is 36007516.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61570063 - 2⁵ = 61570031 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61570043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30785031 + 30785032.

It is an arithmetic number, because the mean of its divisors is an integer number (30785032).

Almost surely, 2^61570063 is an apocalyptic number.

61570063 is a deficient number, since it is larger than the sum of its proper divisors (1).

61570063 is an equidigital number, since it uses as much as digits as its factorization.

61570063 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3780, while the sum is 28.

The square root of 61570063 is about 7846.6593528711. The cubic root of 61570063 is about 394.8721756990.

Adding to 61570063 its reverse (36007516), we get a palindrome (97577579).

The spelling of 61570063 in words is "sixty-one million, five hundred seventy thousand, sixty-three".