61968733 has 2 divisors, whose sum is σ = 61968734. Its totient is φ = 61968732.

The previous prime is 61968707. The next prime is 61968763. The reversal of 61968733 is 33786916.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 60808804 + 1159929 = 7798^2 + 1077^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61968733 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 61968733.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61968763) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30984366 + 30984367.

It is an arithmetic number, because the mean of its divisors is an integer number (30984367).

Almost surely, 2^61968733 is an apocalyptic number.

It is an amenable number.

61968733 is a deficient number, since it is larger than the sum of its proper divisors (1).

61968733 is an equidigital number, since it uses as much as digits as its factorization.

61968733 is an evil number, because the sum of its binary digits is even.

The product of its digits is 163296, while the sum is 43.

The square root of 61968733 is about 7872.0221671436. The cubic root of 61968733 is about 395.7226167714.

The spelling of 61968733 in words is "sixty-one million, nine hundred sixty-eight thousand, seven hundred thirty-three".