61568573 has 16 divisors (see below), whose sum is σ = 70336512. Its totient is φ = 53382000.

The previous prime is 61568527. The next prime is 61568597. The reversal of 61568573 is 37586516.

It is not a de Polignac number, because 61568573 - 2¹⁶ = 61503037 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 61568573.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61568173) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22940 + ... + 25482.

It is an arithmetic number, because the mean of its divisors is an integer number (4396032).

Almost surely, 2^61568573 is an apocalyptic number.

It is an amenable number.

61568573 is a deficient number, since it is larger than the sum of its proper divisors (8767939).

61568573 is a wasteful number, since it uses less digits than its factorization.

61568573 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2656.

The product of its digits is 151200, while the sum is 41.

The square root of 61568573 is about 7846.5644074334. The cubic root of 61568573 is about 394.8689903615.

The spelling of 61568573 in words is "sixty-one million, five hundred sixty-eight thousand, five hundred seventy-three".