99540678 has 32 divisors (see below), whose sum is σ = 214780896. Its totient is φ = 30637568.

The previous prime is 99540643. The next prime is 99540691. The reversal of 99540678 is 87604599.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3801 + ... + 14612.

It is an arithmetic number, because the mean of its divisors is an integer number (6711903).

Almost surely, 2^99540678 is an apocalyptic number.

99540678 is an abundant number, since it is smaller than the sum of its proper divisors (115240218).

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

99540678 is a wasteful number, since it uses less digits than its factorization.

99540678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18488.

The product of its (nonzero) digits is 544320, while the sum is 48.

The square root of 99540678 is about 9977.0074671717. The cubic root of 99540678 is about 463.4471312129.

The spelling of 99540678 in words is "ninety-nine million, five hundred forty thousand, six hundred seventy-eight".