61758679 has 2 divisors, whose sum is σ = 61758680. Its totient is φ = 61758678.

The previous prime is 61758677. The next prime is 61758701. The reversal of 61758679 is 97685716.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61758679 - 2¹ = 61758677 is a prime.

Together with 61758677, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61758677) 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, 30879339 + 30879340.

It is an arithmetic number, because the mean of its divisors is an integer number (30879340).

Almost surely, 2^61758679 is an apocalyptic number.

61758679 is a deficient number, since it is larger than the sum of its proper divisors (1).

61758679 is an equidigital number, since it uses as much as digits as its factorization.

61758679 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 61758679 is about 7858.6690348939. The cubic root of 61758679 is about 395.2749866416.

The spelling of 61758679 in words is "sixty-one million, seven hundred fifty-eight thousand, six hundred seventy-nine".