61916377 has 2 divisors, whose sum is σ = 61916378. Its totient is φ = 61916376.

The previous prime is 61916369. The next prime is 61916381. The reversal of 61916377 is 77361916.

It is a happy number.

61916377 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 55711296 + 6205081 = 7464^2 + 2491^2 .

It is a cyclic number.

It is not a de Polignac number, because 61916377 - 2³ = 61916369 is a prime.

It is a super-2 number, since 2×61916377² = 7667275481612258, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (61916317) 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, 30958188 + 30958189.

It is an arithmetic number, because the mean of its divisors is an integer number (30958189).

Almost surely, 2^61916377 is an apocalyptic number.

It is an amenable number.

61916377 is a deficient number, since it is larger than the sum of its proper divisors (1).

61916377 is an equidigital number, since it uses as much as digits as its factorization.

61916377 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 47628, while the sum is 40.

The square root of 61916377 is about 7868.6960164947. The cubic root of 61916377 is about 395.6111396339.

The spelling of 61916377 in words is "sixty-one million, nine hundred sixteen thousand, three hundred seventy-seven".