98870641 has 2 divisors, whose sum is σ = 98870642. Its totient is φ = 98870640.

The previous prime is 98870621. The next prime is 98870647. The reversal of 98870641 is 14607889.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 92640625 + 6230016 = 9625^2 + 2496^2 .

It is an emirp because it is prime and its reverse (14607889) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 98870641 - 2⁵ = 98870609 is a prime.

It is not a weakly prime, because it can be changed into another prime (98870647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49435320 + 49435321.

It is an arithmetic number, because the mean of its divisors is an integer number (49435321).

Almost surely, 2^98870641 is an apocalyptic number.

It is an amenable number.

98870641 is a deficient number, since it is larger than the sum of its proper divisors (1).

98870641 is an equidigital number, since it uses as much as digits as its factorization.

98870641 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96768, while the sum is 43.

The square root of 98870641 is about 9943.3717118491. The cubic root of 98870641 is about 462.4049238215.

The spelling of 98870641 in words is "ninety-eight million, eight hundred seventy thousand, six hundred forty-one".