99866061 has 16 divisors (see below), whose sum is σ = 148115520. Its totient is φ = 66502800.

The previous prime is 99866057. The next prime is 99866077. The reversal of 99866061 is 16066899.

It is not a de Polignac number, because 99866061 - 2² = 99866057 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 99865998 and 99866016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99866021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33706 + ... + 36548.

It is an arithmetic number, because the mean of its divisors is an integer number (9257220).

Almost surely, 2^99866061 is an apocalyptic number.

It is an amenable number.

99866061 is a deficient number, since it is larger than the sum of its proper divisors (48249459).

99866061 is a wasteful number, since it uses less digits than its factorization.

99866061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4153 (or 4147 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 45.

The square root of 99866061 is about 9993.3008060400. The cubic root of 99866061 is about 463.9515608495.

The spelling of 99866061 in words is "ninety-nine million, eight hundred sixty-six thousand, sixty-one".