98643487 has 2 divisors, whose sum is σ = 98643488. Its totient is φ = 98643486.

The previous prime is 98643439. The next prime is 98643521. The reversal of 98643487 is 78434689.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 98643487 - 2¹⁵ = 98610719 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 98643487.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (98643427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49321743 + 49321744.

It is an arithmetic number, because the mean of its divisors is an integer number (49321744).

Almost surely, 2^98643487 is an apocalyptic number.

98643487 is a deficient number, since it is larger than the sum of its proper divisors (1).

98643487 is an equidigital number, since it uses as much as digits as its factorization.

98643487 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1161216, while the sum is 49.

The square root of 98643487 is about 9931.9427606083. The cubic root of 98643487 is about 462.0505291960.

The spelling of 98643487 in words is "ninety-eight million, six hundred forty-three thousand, four hundred eighty-seven".