98987647 has 4 divisors (see below), whose sum is σ = 107986536. Its totient is φ = 89988760.

The previous prime is 98987641. The next prime is 98987657. The reversal of 98987647 is 74678989.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 98987647 - 2³ = 98987639 is a prime.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 98987591 and 98987600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (98987641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4499428 + ... + 4499449.

It is an arithmetic number, because the mean of its divisors is an integer number (26996634).

Almost surely, 2^98987647 is an apocalyptic number.

98987647 is a deficient number, since it is larger than the sum of its proper divisors (8998889).

98987647 is a wasteful number, since it uses less digits than its factorization.

98987647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8998888.

The product of its digits is 6096384, while the sum is 58.

The square root of 98987647 is about 9949.2535900941. The cubic root of 98987647 is about 462.5872591142.

The spelling of 98987647 in words is "ninety-eight million, nine hundred eighty-seven thousand, six hundred forty-seven".