99996987 has 8 divisors (see below), whose sum is σ = 133437760. Its totient is φ = 66610440.

The previous prime is 99996983. The next prime is 99997033. The reversal of 99996987 is 78969999.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 99996987 - 2² = 99996983 is a prime.

It is not an unprimeable number, because it can be changed into a prime (99996983) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9037 + ... + 16782.

It is an arithmetic number, because the mean of its divisors is an integer number (16679720).

Almost surely, 2^99996987 is an apocalyptic number.

99996987 is a deficient number, since it is larger than the sum of its proper divisors (33440773).

99996987 is a wasteful number, since it uses less digits than its factorization.

99996987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27113.

The product of its digits is 19840464, while the sum is 66.

The square root of 99996987 is about 9999.8493488652. The cubic root of 99996987 is about 464.1542216121.

The spelling of 99996987 in words is "ninety-nine million, nine hundred ninety-six thousand, nine hundred eighty-seven".