20665414 has 16 divisors (see below), whose sum is σ = 38647296. Its totient is φ = 8051400.

The previous prime is 20665367. The next prime is 20665433. The reversal of 20665414 is 41456602.

It is a congruent number.

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, 66942 + ... + 67249.

It is an arithmetic number, because the mean of its divisors is an integer number (2415456).

Almost surely, 2^20665414 is an apocalyptic number.

20665414 is a deficient number, since it is larger than the sum of its proper divisors (17981882).

20665414 is a wasteful number, since it uses less digits than its factorization.

20665414 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134211.

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 20665414 is about 4545.9227886096. The cubic root of 20665414 is about 274.4193323481.

The spelling of 20665414 in words is "twenty million, six hundred sixty-five thousand, four hundred fourteen".