98987681 has 8 divisors (see below), whose sum is σ = 110041344. Its totient is φ = 88425360.

The previous prime is 98987671. The next prime is 98987683. The reversal of 98987681 is 18678989.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 98987681 - 2¹⁸ = 98725537 is a prime.

It is a super-2 number, since 2×98987681² = 19597121979515522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (98987683) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 122411 + ... + 123216.

It is an arithmetic number, because the mean of its divisors is an integer number (13755168).

Almost surely, 2^98987681 is an apocalyptic number.

It is an amenable number.

98987681 is a deficient number, since it is larger than the sum of its proper divisors (11053663).

98987681 is a wasteful number, since it uses less digits than its factorization.

98987681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245671.

The product of its digits is 1741824, while the sum is 56.

The square root of 98987681 is about 9949.2552987648. The cubic root of 98987681 is about 462.5873120769.

The spelling of 98987681 in words is "ninety-eight million, nine hundred eighty-seven thousand, six hundred eighty-one".