61965877 has 2 divisors, whose sum is σ = 61965878. Its totient is φ = 61965876.

The previous prime is 61965857. The next prime is 61965899. The reversal of 61965877 is 77856916.

61965877 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 60078001 + 1887876 = 7751^2 + 1374^2 .

It is a cyclic number.

It is not a de Polignac number, because 61965877 - 2¹¹ = 61963829 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 61965877.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61965857) 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 as a sum of consecutive naturals, namely, 30982938 + 30982939.

It is an arithmetic number, because the mean of its divisors is an integer number (30982939).

Almost surely, 2^61965877 is an apocalyptic number.

It is an amenable number.

61965877 is a deficient number, since it is larger than the sum of its proper divisors (1).

61965877 is an equidigital number, since it uses as much as digits as its factorization.

61965877 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 635040, while the sum is 49.

The square root of 61965877 is about 7871.8407631252. The cubic root of 61965877 is about 395.7165373553.

The spelling of 61965877 in words is "sixty-one million, nine hundred sixty-five thousand, eight hundred seventy-seven".