61799599 has 2 divisors, whose sum is σ = 61799600. Its totient is φ = 61799598.

The previous prime is 61799581. The next prime is 61799603. The reversal of 61799599 is 99599716.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61799599 - 2¹⁷ = 61668527 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 (61799999) 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, 30899799 + 30899800.

It is an arithmetic number, because the mean of its divisors is an integer number (30899800).

Almost surely, 2^61799599 is an apocalyptic number.

61799599 is a deficient number, since it is larger than the sum of its proper divisors (1).

61799599 is an equidigital number, since it uses as much as digits as its factorization.

61799599 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1377810, while the sum is 55.

The square root of 61799599 is about 7861.2720980767. The cubic root of 61799599 is about 395.3622676614.

The spelling of 61799599 in words is "sixty-one million, seven hundred ninety-nine thousand, five hundred ninety-nine".