99000681 has 8 divisors (see below), whose sum is σ = 142154880. Its totient is φ = 60923472.

The previous prime is 99000653. The next prime is 99000683. The reversal of 99000681 is 18600099.

It is a happy number.

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

It is not a de Polignac number, because 99000681 - 2¹⁰ = 98999657 is a prime.

It is a super-2 number, since 2×99000681² = 19602269676927522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (99000683) 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, 1269201 + ... + 1269278.

It is an arithmetic number, because the mean of its divisors is an integer number (17769360).

Almost surely, 2^99000681 is an apocalyptic number.

It is an amenable number.

99000681 is a deficient number, since it is larger than the sum of its proper divisors (43154199).

99000681 is a wasteful number, since it uses less digits than its factorization.

99000681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2538495.

The product of its (nonzero) digits is 3888, while the sum is 33.

The square root of 99000681 is about 9949.9085925450. The cubic root of 99000681 is about 462.6075616398.

It can be divided in two parts, 99000 and 681, that added together give a triangular number (99681 = T₄₄₆).

The spelling of 99000681 in words is "ninety-nine million, six hundred eighty-one", and thus it is an aban number.