98180681 has 4 divisors (see below), whose sum is σ = 98218512. Its totient is φ = 98142852.

The previous prime is 98180651. The next prime is 98180699. The reversal of 98180681 is 18608189.

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, and also an emirpimes, since its reverse is a distinct semiprime: 18608189 = 97 ⋅191837.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-98180681 is a prime.

It is a super-2 number, since 2×98180681² = 19278892243247522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (98180651) 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, 14711 + ... + 20316.

It is an arithmetic number, because the mean of its divisors is an integer number (24554628).

Almost surely, 2^98180681 is an apocalyptic number.

It is an amenable number.

98180681 is a deficient number, since it is larger than the sum of its proper divisors (37831).

98180681 is a wasteful number, since it uses less digits than its factorization.

98180681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37830.

The product of its (nonzero) digits is 27648, while the sum is 41.

The square root of 98180681 is about 9908.6165028222. The cubic root of 98180681 is about 461.3267947918.

The spelling of 98180681 in words is "ninety-eight million, one hundred eighty thousand, six hundred eighty-one".