61988359 has 2 divisors, whose sum is σ = 61988360. Its totient is φ = 61988358.

The previous prime is 61988299. The next prime is 61988389. The reversal of 61988359 is 95388916.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61988359 - 2⁷ = 61988231 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 (61988389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30994179 + 30994180.

It is an arithmetic number, because the mean of its divisors is an integer number (30994180).

Almost surely, 2^61988359 is an apocalyptic number.

61988359 is a deficient number, since it is larger than the sum of its proper divisors (1).

61988359 is an equidigital number, since it uses as much as digits as its factorization.

61988359 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 466560, while the sum is 49.

The square root of 61988359 is about 7873.2686350715. The cubic root of 61988359 is about 395.7643885486.

The spelling of 61988359 in words is "sixty-one million, nine hundred eighty-eight thousand, three hundred fifty-nine".