98578671 has 4 divisors (see below), whose sum is σ = 131438232. Its totient is φ = 65719112.

The previous prime is 98578643. The next prime is 98578703. The reversal of 98578671 is 17687589.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17687589 = 3 ⋅5895863.

It is a cyclic number.

It is not a de Polignac number, because 98578671 - 2⁵ = 98578639 is a prime.

It is a super-2 number, since 2×98578671² = 19435508752252482, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (98578771) 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, 16429776 + ... + 16429781.

It is an arithmetic number, because the mean of its divisors is an integer number (32859558).

Almost surely, 2^98578671 is an apocalyptic number.

98578671 is a deficient number, since it is larger than the sum of its proper divisors (32859561).

98578671 is a wasteful number, since it uses less digits than its factorization.

98578671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32859560.

The product of its digits is 846720, while the sum is 51.

The square root of 98578671 is about 9928.6792172977. The cubic root of 98578671 is about 461.9493066696.

It can be divided in two parts, 9857 and 8671, that added together give a triangular number (18528 = T₁₉₂).

The spelling of 98578671 in words is "ninety-eight million, five hundred seventy-eight thousand, six hundred seventy-one".