20630899 has 8 divisors (see below), whose sum is σ = 20877488. Its totient is φ = 20386080.

The previous prime is 20630893. The next prime is 20630963. The reversal of 20630899 is 99803602.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20630899 - 2⁹ = 20630387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20630893) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51769 + ... + 52165.

It is an arithmetic number, because the mean of its divisors is an integer number (2609686).

Almost surely, 2^20630899 is an apocalyptic number.

20630899 is a deficient number, since it is larger than the sum of its proper divisors (246589).

20630899 is a wasteful number, since it uses less digits than its factorization.

20630899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 885.

The product of its (nonzero) digits is 23328, while the sum is 37.

The square root of 20630899 is about 4542.1249432397. The cubic root of 20630899 is about 274.2664704820.

The spelling of 20630899 in words is "twenty million, six hundred thirty thousand, eight hundred ninety-nine".