61716377 has 2 divisors, whose sum is σ = 61716378. Its totient is φ = 61716376.

The previous prime is 61716373. The next prime is 61716449. The reversal of 61716377 is 77361716.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 60590656 + 1125721 = 7784^2 + 1061^2 .

It is a cyclic number.

It is not a de Polignac number, because 61716377 - 2² = 61716373 is a prime.

It is a super-2 number, since 2×61716377² = 7617822380012258, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 61716377.

It is not a weakly prime, because it can be changed into another prime (61716371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30858188 + 30858189.

It is an arithmetic number, because the mean of its divisors is an integer number (30858189).

Almost surely, 2^61716377 is an apocalyptic number.

It is an amenable number.

61716377 is a deficient number, since it is larger than the sum of its proper divisors (1).

61716377 is an equidigital number, since it uses as much as digits as its factorization.

61716377 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 37044, while the sum is 38.

The square root of 61716377 is about 7855.9771511888. The cubic root of 61716377 is about 395.1847173229.

The spelling of 61716377 in words is "sixty-one million, seven hundred sixteen thousand, three hundred seventy-seven".