61786079 has 2 divisors, whose sum is σ = 61786080. Its totient is φ = 61786078.

The previous prime is 61786063. The next prime is 61786091. The reversal of 61786079 is 97068716.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61786079 - 2⁴ = 61786063 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61786009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30893039 + 30893040.

It is an arithmetic number, because the mean of its divisors is an integer number (30893040).

Almost surely, 2^61786079 is an apocalyptic number.

61786079 is a deficient number, since it is larger than the sum of its proper divisors (1).

61786079 is an equidigital number, since it uses as much as digits as its factorization.

61786079 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 127008, while the sum is 44.

The square root of 61786079 is about 7860.4121393220. The cubic root of 61786079 is about 395.3334342073. Note that the first 3 decimals are identical.

The spelling of 61786079 in words is "sixty-one million, seven hundred eighty-six thousand, seventy-nine".