600020091 has 12 divisors (see below), whose sum is σ = 945486360. Its totient is φ = 363648480.

The previous prime is 600020087. The next prime is 600020101. The reversal of 600020091 is 190020006.

It is not a de Polignac number, because 600020091 - 2² = 600020087 is a prime.

It is not an unprimeable number, because it can be changed into a prime (600020051) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3030306 + ... + 3030503.

It is an arithmetic number, because the mean of its divisors is an integer number (78790530).

Almost surely, 2^600020091 is an apocalyptic number.

600020091 is a deficient number, since it is larger than the sum of its proper divisors (345466269).

600020091 is a wasteful number, since it uses less digits than its factorization.

600020091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6060826 (or 6060823 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

The square root of 600020091 is about 24495.3075302189. The cubic root of 600020091 is about 843.4420793109.

Adding to 600020091 its reverse (190020006), we get a palindrome (790040097).

The spelling of 600020091 in words is "six hundred million, twenty thousand, ninety-one".