899606997 has 12 divisors (see below), whose sum is σ = 1303614624. Its totient is φ = 597807720.

The previous prime is 899606989. The next prime is 899607061. The reversal of 899606997 is 799606998.

It is not a de Polignac number, because 899606997 - 2³ = 899606989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (899606957) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 157903 + ... + 163500.

It is an arithmetic number, because the mean of its divisors is an integer number (108634552).

Almost surely, 2^899606997 is an apocalyptic number.

It is an amenable number.

899606997 is a deficient number, since it is larger than the sum of its proper divisors (404007627).

899606997 is a wasteful number, since it uses less digits than its factorization.

899606997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 321720 (or 321717 counting only the distinct ones).

The product of its (nonzero) digits is 13226976, while the sum is 63.

The square root of 899606997 is about 29993.4492347913. The cubic root of 899606997 is about 965.3488307286.

Subtracting from 899606997 its reverse (799606998), we obtain a palindrome (99999999).

The spelling of 899606997 in words is "eight hundred ninety-nine million, six hundred six thousand, nine hundred ninety-seven".