20662115 has 8 divisors (see below), whose sum is σ = 24868080. Its totient is φ = 16480672.

The previous prime is 20662091. The next prime is 20662121. The reversal of 20662115 is 51126602.

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 20662115 - 2⁶ = 20662051 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4220 + ... + 7689.

It is an arithmetic number, because the mean of its divisors is an integer number (3108510).

Almost surely, 2^20662115 is an apocalyptic number.

20662115 is a deficient number, since it is larger than the sum of its proper divisors (4205965).

20662115 is a wasteful number, since it uses less digits than its factorization.

20662115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12261.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 20662115 is about 4545.5599215058. The cubic root of 20662115 is about 274.4047289217.

Adding to 20662115 its reverse (51126602), we get a palindrome (71788717).

The spelling of 20662115 in words is "twenty million, six hundred sixty-two thousand, one hundred fifteen".