98621813 has 4 divisors (see below), whose sum is σ = 99117600. Its totient is φ = 98126028.

The previous prime is 98621807. The next prime is 98621849. The reversal of 98621813 is 31812689.

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 98621813 - 2¹⁰ = 98620789 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (98621893) 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, 247595 + ... + 247992.

It is an arithmetic number, because the mean of its divisors is an integer number (24779400).

Almost surely, 2^98621813 is an apocalyptic number.

It is an amenable number.

98621813 is a deficient number, since it is larger than the sum of its proper divisors (495787).

98621813 is a wasteful number, since it uses less digits than its factorization.

98621813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 495786.

The product of its digits is 20736, while the sum is 38.

The square root of 98621813 is about 9930.8515747644. The cubic root of 98621813 is about 462.0166860536.

The spelling of 98621813 in words is "ninety-eight million, six hundred twenty-one thousand, eight hundred thirteen".