99601 has 4 divisors (see below), whose sum is σ = 100672. Its totient is φ = 98532.

The previous prime is 99581. The next prime is 99607. The reversal of 99601 is 10699.

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 a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 10699 = 13 ⋅823.

It is a cyclic number.

It is not a de Polignac number, because 99601 - 2⁹ = 99089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99607) 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, 381 + ... + 586.

It is an arithmetic number, because the mean of its divisors is an integer number (25168).

2⁹⁹⁶⁰¹ is an apocalyptic number.

It is an amenable number.

99601 is a deficient number, since it is larger than the sum of its proper divisors (1071).

99601 is a wasteful number, since it uses less digits than its factorization.

99601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1070.

The product of its (nonzero) digits is 486, while the sum is 25.

The square root of 99601 is about 315.5962610678. The cubic root of 99601 is about 46.3540729171.

The spelling of 99601 in words is "ninety-nine thousand, six hundred one".