99574578 has 24 divisors (see below), whose sum is σ = 215933328. Its totient is φ = 33162552.

The previous prime is 99574577. The next prime is 99574591. The reversal of 99574578 is 87547599.

It is not an unprimeable number, because it can be changed into a prime (99574577) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 32125 + ... + 35087.

It is an arithmetic number, because the mean of its divisors is an integer number (8997222).

Almost surely, 2^99574578 is an apocalyptic number.

99574578 is an abundant number, since it is smaller than the sum of its proper divisors (116358750).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

99574578 is a wasteful number, since it uses less digits than its factorization.

99574578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4838 (or 4835 counting only the distinct ones).

The product of its digits is 3175200, while the sum is 54.

The square root of 99574578 is about 9978.7062287653. The cubic root of 99574578 is about 463.4997364221.

It can be divided in two parts, 9957 and 4578, that added together give a triangular number (14535 = T₁₇₀).

The spelling of 99574578 in words is "ninety-nine million, five hundred seventy-four thousand, five hundred seventy-eight".