99996678 has 24 divisors (see below), whose sum is σ = 217622808. Its totient is φ = 33184032.

The previous prime is 99996671. The next prime is 99996679. The reversal of 99996678 is 87669999.

It is a super-2 number, since 2×99996678² = 19998671222071368, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99996671) 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, 8151 + ... + 16322.

It is an arithmetic number, because the mean of its divisors is an integer number (9067617).

Almost surely, 2^99996678 is an apocalyptic number.

99996678 is an abundant number, since it is smaller than the sum of its proper divisors (117626130).

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

99996678 is a wasteful number, since it uses less digits than its factorization.

99996678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24708 (or 24705 counting only the distinct ones).

The product of its digits is 13226976, while the sum is 63.

The square root of 99996678 is about 9999.8338986205. The cubic root of 99996678 is about 464.1537435183.

The spelling of 99996678 in words is "ninety-nine million, nine hundred ninety-six thousand, six hundred seventy-eight".