20604099 has 16 divisors (see below), whose sum is σ = 28385280. Its totient is φ = 13285440.

The previous prime is 20604047. The next prime is 20604107. The reversal of 20604099 is 99040602.

It is not a de Polignac number, because 20604099 - 2⁷ = 20603971 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20604019) 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, 14962 + ... + 16280.

It is an arithmetic number, because the mean of its divisors is an integer number (1774080).

Almost surely, 2^20604099 is an apocalyptic number.

20604099 is a deficient number, since it is larger than the sum of its proper divisors (7781181).

20604099 is a wasteful number, since it uses less digits than its factorization.

20604099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1490.

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 20604099 is about 4539.1738235058. The cubic root of 20604099 is about 274.1476595913.

The spelling of 20604099 in words is "twenty million, six hundred four thousand, ninety-nine".