86598121 has 2 divisors, whose sum is σ = 86598122. Its totient is φ = 86598120.

The previous prime is 86598077. The next prime is 86598137. The reversal of 86598121 is 12189568.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 55294096 + 31304025 = 7436^2 + 5595^2 .

It is a cyclic number.

It is not a de Polignac number, because 86598121 - 2¹⁹ = 86073833 is a prime.

It is not a weakly prime, because it can be changed into another prime (86598821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43299060 + 43299061.

It is an arithmetic number, because the mean of its divisors is an integer number (43299061).

Almost surely, 2^86598121 is an apocalyptic number.

It is an amenable number.

86598121 is a deficient number, since it is larger than the sum of its proper divisors (1).

86598121 is an equidigital number, since it uses as much as digits as its factorization.

86598121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34560, while the sum is 40.

The square root of 86598121 is about 9305.8111414320. The cubic root of 86598121 is about 442.4214311439.

The spelling of 86598121 in words is "eighty-six million, five hundred ninety-eight thousand, one hundred twenty-one".