98866631 has 2 divisors, whose sum is σ = 98866632. Its totient is φ = 98866630.

The previous prime is 98866619. The next prime is 98866637. The reversal of 98866631 is 13666889.

It is a strong prime.

It is an emirp because it is prime and its reverse (13666889) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 98866631 - 2⁶ = 98866567 is a prime.

It is a super-2 number, since 2×98866631² = 19549221450580322, which contains 22 as substring.

It is equal to p_5699981 and since 98866631 and 5699981 have the same sum of digits, it is a Honaker prime.

It is a nialpdrome in base 10.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (98866637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49433315 + 49433316.

It is an arithmetic number, because the mean of its divisors is an integer number (49433316).

Almost surely, 2^98866631 is an apocalyptic number.

98866631 is a deficient number, since it is larger than the sum of its proper divisors (1).

98866631 is an equidigital number, since it uses as much as digits as its factorization.

98866631 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 373248, while the sum is 47.

The square root of 98866631 is about 9943.1700679411. The cubic root of 98866631 is about 462.3986723236.

The spelling of 98866631 in words is "ninety-eight million, eight hundred sixty-six thousand, six hundred thirty-one".