20662814 has 4 divisors (see below), whose sum is σ = 30994224. Its totient is φ = 10331406.

The previous prime is 20662801. The next prime is 20662847. The reversal of 20662814 is 41826602.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5165702 + ... + 5165705.

It is an arithmetic number, because the mean of its divisors is an integer number (7748556).

Almost surely, 2^20662814 is an apocalyptic number.

20662814 is a deficient number, since it is larger than the sum of its proper divisors (10331410).

20662814 is a wasteful number, since it uses less digits than its factorization.

20662814 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10331409.

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 20662814 is about 4545.6368090731. The cubic root of 20662814 is about 274.4078232604.

The spelling of 20662814 in words is "twenty million, six hundred sixty-two thousand, eight hundred fourteen".