61968089 has 8 divisors (see below), whose sum is σ = 62479560. Its totient is φ = 61459200.

The previous prime is 61968079. The next prime is 61968103. The reversal of 61968089 is 98086916.

It can be written as a sum of positive squares in 4 ways, for example, as 16540489 + 45427600 = 4067^2 + 6740^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 61968089 - 2⁴ = 61968073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61968029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 93419 + ... + 94079.

It is an arithmetic number, because the mean of its divisors is an integer number (7809945).

Almost surely, 2^61968089 is an apocalyptic number.

It is an amenable number.

61968089 is a deficient number, since it is larger than the sum of its proper divisors (511471).

61968089 is a wasteful number, since it uses less digits than its factorization.

61968089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1291.

The product of its (nonzero) digits is 186624, while the sum is 47.

The square root of 61968089 is about 7871.9812626810. The cubic root of 61968089 is about 395.7212459390.

The spelling of 61968089 in words is "sixty-one million, nine hundred sixty-eight thousand, eighty-nine".