98866643 has 2 divisors, whose sum is σ = 98866644. Its totient is φ = 98866642.

The previous prime is 98866639. The next prime is 98866667. The reversal of 98866643 is 34666889.

It is a weak prime.

It is an emirp because it is prime and its reverse (34666889) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 98866643 - 2² = 98866639 is a prime.

It is a super-2 number, since 2×98866643² = 19549226196178898, which contains 22 as substring.

It is equal to p_5699984 and since 98866643 and 5699984 have the same sum of digits, it is a Honaker prime.

It is a nialpdrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 98866591 and 98866600.

It is not a weakly prime, because it can be changed into another prime (98866693) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49433321 + 49433322.

It is an arithmetic number, because the mean of its divisors is an integer number (49433322).

Almost surely, 2^98866643 is an apocalyptic number.

98866643 is a deficient number, since it is larger than the sum of its proper divisors (1).

98866643 is an equidigital number, since it uses as much as digits as its factorization.

98866643 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1492992, while the sum is 50.

The square root of 98866643 is about 9943.1706713704. The cubic root of 98866643 is about 462.3986910316.

The spelling of 98866643 in words is "ninety-eight million, eight hundred sixty-six thousand, six hundred forty-three".