98659681 has 4 divisors (see below), whose sum is σ = 98703664. Its totient is φ = 98615700.

The previous prime is 98659679. The next prime is 98659697. The reversal of 98659681 is 18695689.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 98659681 - 2¹ = 98659679 is a prime.

It is a super-2 number, since 2×98659681² = 19467465310043522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (98659181) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18435 + ... + 23176.

It is an arithmetic number, because the mean of its divisors is an integer number (24675916).

Almost surely, 2^98659681 is an apocalyptic number.

It is an amenable number.

98659681 is a deficient number, since it is larger than the sum of its proper divisors (43983).

98659681 is a wasteful number, since it uses less digits than its factorization.

98659681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43982.

The product of its digits is 933120, while the sum is 52.

The square root of 98659681 is about 9932.7579755071. The cubic root of 98659681 is about 462.0758122873.

The spelling of 98659681 in words is "ninety-eight million, six hundred fifty-nine thousand, six hundred eighty-one".