61968569 has 8 divisors (see below), whose sum is σ = 66796800. Its totient is φ = 57149136.

The previous prime is 61968559. The next prime is 61968583. The reversal of 61968569 is 96586916.

61968569 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61968569 is a prime.

It is a super-2 number, since 2×61968569² = 7680207087815522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61968539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24632 + ... + 27030.

It is an arithmetic number, because the mean of its divisors is an integer number (8349600).

Almost surely, 2^61968569 is an apocalyptic number.

It is an amenable number.

61968569 is a deficient number, since it is larger than the sum of its proper divisors (4828231).

61968569 is a wasteful number, since it uses less digits than its factorization.

61968569 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4399.

The product of its digits is 699840, while the sum is 50.

The square root of 61968569 is about 7872.0117504994. The cubic root of 61968569 is about 395.7222676784.

The spelling of 61968569 in words is "sixty-one million, nine hundred sixty-eight thousand, five hundred sixty-nine".