20675299 has 4 divisors (see below), whose sum is σ = 20691000. Its totient is φ = 20659600.

The previous prime is 20675273. The next prime is 20675309. The reversal of 20675299 is 99257602.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20675299 - 2¹³ = 20667107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20675099) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5674 + ... + 8575.

It is an arithmetic number, because the mean of its divisors is an integer number (5172750).

Almost surely, 2^20675299 is an apocalyptic number.

20675299 is a deficient number, since it is larger than the sum of its proper divisors (15701).

20675299 is a wasteful number, since it uses less digits than its factorization.

20675299 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15700.

The product of its (nonzero) digits is 68040, while the sum is 40.

The square root of 20675299 is about 4547.0098966244. The cubic root of 20675299 is about 274.4630802046.

The spelling of 20675299 in words is "twenty million, six hundred seventy-five thousand, two hundred ninety-nine".