61567313 has 2 divisors, whose sum is σ = 61567314. Its totient is φ = 61567312.

The previous prime is 61567279. The next prime is 61567339. The reversal of 61567313 is 31376516.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 36336784 + 25230529 = 6028^2 + 5023^2 .

It is a cyclic number.

It is not a de Polignac number, because 61567313 - 2¹² = 61563217 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 61567313.

It is not a weakly prime, because it can be changed into another prime (61567213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30783656 + 30783657.

It is an arithmetic number, because the mean of its divisors is an integer number (30783657).

Almost surely, 2^61567313 is an apocalyptic number.

It is an amenable number.

61567313 is a deficient number, since it is larger than the sum of its proper divisors (1).

61567313 is an equidigital number, since it uses as much as digits as its factorization.

61567313 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11340, while the sum is 32.

The square root of 61567313 is about 7846.4841171062. The cubic root of 61567313 is about 394.8662966803.

The spelling of 61567313 in words is "sixty-one million, five hundred sixty-seven thousand, three hundred thirteen".