99998651 has 8 divisors (see below), whose sum is σ = 102304944. Its totient is φ = 97708000.

The previous prime is 99998611. The next prime is 99998663. The reversal of 99998651 is 15689999.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99998651 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (99998611) 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, 9545 + ... + 17061.

It is an arithmetic number, because the mean of its divisors is an integer number (12788118).

Almost surely, 2^99998651 is an apocalyptic number.

99998651 is a deficient number, since it is larger than the sum of its proper divisors (2306293).

99998651 is a wasteful number, since it uses less digits than its factorization.

99998651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7821.

The product of its digits is 1574640, while the sum is 56.

The square root of 99998651 is about 9999.9325497725. The cubic root of 99998651 is about 464.1567961841.

The spelling of 99998651 in words is "ninety-nine million, nine hundred ninety-eight thousand, six hundred fifty-one".