98764321 has 2 divisors, whose sum is σ = 98764322. Its totient is φ = 98764320.

The previous prime is 98764319. The next prime is 98764327. The reversal of 98764321 is 12346789.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 62331025 + 36433296 = 7895^2 + 6036^2 .

It is a cyclic number.

It is not a de Polignac number, because 98764321 - 2¹ = 98764319 is a prime.

It is a super-2 number, since 2×98764321² = 19508782205182082, which contains 22 as substring.

Together with 98764319, it forms a pair of twin primes.

It is a nialpdrome in base 10.

It is not a weakly prime, because it can be changed into another prime (98764327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is an upside-down number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49382160 + 49382161.

It is an arithmetic number, because the mean of its divisors is an integer number (49382161).

Almost surely, 2^98764321 is an apocalyptic number.

It is an amenable number.

98764321 is a deficient number, since it is larger than the sum of its proper divisors (1).

98764321 is an equidigital number, since it uses as much as digits as its factorization.

98764321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 72576, while the sum is 40.

The square root of 98764321 is about 9938.0239987635. The cubic root of 98764321 is about 462.2391161767.

The spelling of 98764321 in words is "ninety-eight million, seven hundred sixty-four thousand, three hundred twenty-one".