61968567 has 4 divisors (see below), whose sum is σ = 82624760. Its totient is φ = 41312376.

The previous prime is 61968559. The next prime is 61968583. The reversal of 61968567 is 76586916.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 61968567 - 2³ = 61968559 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61968667) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10328092 + ... + 10328097.

It is an arithmetic number, because the mean of its divisors is an integer number (20656190).

Almost surely, 2^61968567 is an apocalyptic number.

61968567 is a deficient number, since it is larger than the sum of its proper divisors (20656193).

61968567 is a wasteful number, since it uses less digits than its factorization.

61968567 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20656192.

The product of its digits is 544320, while the sum is 48.

The square root of 61968567 is about 7872.0116234670. The cubic root of 61968567 is about 395.7222634211.

The spelling of 61968567 in words is "sixty-one million, nine hundred sixty-eight thousand, five hundred sixty-seven".