99916601 has 4 divisors (see below), whose sum is σ = 100515072. Its totient is φ = 99318132.

The previous prime is 99916591. The next prime is 99916603. The reversal of 99916601 is 10661999.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 10661999 = 71 ⋅150169.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99916601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99916603) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 298985 + ... + 299318.

It is an arithmetic number, because the mean of its divisors is an integer number (25128768).

Almost surely, 2^99916601 is an apocalyptic number.

It is an amenable number.

99916601 is a deficient number, since it is larger than the sum of its proper divisors (598471).

99916601 is a wasteful number, since it uses less digits than its factorization.

99916601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 598470.

The product of its (nonzero) digits is 26244, while the sum is 41.

The square root of 99916601 is about 9995.8291802131. The cubic root of 99916601 is about 464.0298128511.

The spelling of 99916601 in words is "ninety-nine million, nine hundred sixteen thousand, six hundred one".