98672591 has 4 divisors (see below), whose sum is σ = 100534392. Its totient is φ = 96810792.

The previous prime is 98672579. The next prime is 98672593. The reversal of 98672591 is 19527689.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-98672591 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 (98672593) 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, 930821 + ... + 930926.

It is an arithmetic number, because the mean of its divisors is an integer number (25133598).

Almost surely, 2^98672591 is an apocalyptic number.

98672591 is a deficient number, since it is larger than the sum of its proper divisors (1861801).

98672591 is a wasteful number, since it uses less digits than its factorization.

98672591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1861800.

The product of its digits is 272160, while the sum is 47.

The square root of 98672591 is about 9933.4078241055. The cubic root of 98672591 is about 462.0959662093.

The spelling of 98672591 in words is "ninety-eight million, six hundred seventy-two thousand, five hundred ninety-one".