98605381 has 4 divisors (see below), whose sum is σ = 112691872. Its totient is φ = 84518892.

The previous prime is 98605379. The next prime is 98605417. The reversal of 98605381 is 18350689.

It is a happy number.

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: 18350689 = 7 ⋅2621527.

It is a cyclic number.

It is not a de Polignac number, because 98605381 - 2¹ = 98605379 is a prime.

It is a super-2 number, since 2×98605381² = 19446042324310322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (98605181) 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, 7043235 + ... + 7043248.

It is an arithmetic number, because the mean of its divisors is an integer number (28172968).

Almost surely, 2^98605381 is an apocalyptic number.

It is an amenable number.

98605381 is a deficient number, since it is larger than the sum of its proper divisors (14086491).

98605381 is a wasteful number, since it uses less digits than its factorization.

98605381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14086490.

The product of its (nonzero) digits is 51840, while the sum is 40.

The square root of 98605381 is about 9930.0242195072. The cubic root of 98605381 is about 461.9910247939.

The spelling of 98605381 in words is "ninety-eight million, six hundred five thousand, three hundred eighty-one".