61298879 has 2 divisors, whose sum is σ = 61298880. Its totient is φ = 61298878.

The previous prime is 61298801. The next prime is 61298893. The reversal of 61298879 is 97889216.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61298879 - 2⁸ = 61298623 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61228879) 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, 30649439 + 30649440.

It is an arithmetic number, because the mean of its divisors is an integer number (30649440).

Almost surely, 2^61298879 is an apocalyptic number.

61298879 is a deficient number, since it is larger than the sum of its proper divisors (1).

61298879 is an equidigital number, since it uses as much as digits as its factorization.

61298879 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 435456, while the sum is 50.

The square root of 61298879 is about 7829.3600632491. The cubic root of 61298879 is about 394.2915871704.

The spelling of 61298879 in words is "sixty-one million, two hundred ninety-eight thousand, eight hundred seventy-nine".