61677841 has 2 divisors, whose sum is σ = 61677842. Its totient is φ = 61677840.

The previous prime is 61677829. The next prime is 61677859. The reversal of 61677841 is 14877616.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49280400 + 12397441 = 7020^2 + 3521^2 .

It is a cyclic number.

It is not a de Polignac number, because 61677841 - 2¹⁷ = 61546769 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 61677794 and 61677803.

It is not a weakly prime, because it can be changed into another prime (61677821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30838920 + 30838921.

It is an arithmetic number, because the mean of its divisors is an integer number (30838921).

Almost surely, 2^61677841 is an apocalyptic number.

It is an amenable number.

61677841 is a deficient number, since it is larger than the sum of its proper divisors (1).

61677841 is an equidigital number, since it uses as much as digits as its factorization.

61677841 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 56448, while the sum is 40.

The square root of 61677841 is about 7853.5241134156. The cubic root of 61677841 is about 395.1024484571.

The spelling of 61677841 in words is "sixty-one million, six hundred seventy-seven thousand, eight hundred forty-one".