20677814 has 16 divisors (see below), whose sum is σ = 34570800. Its totient is φ = 9218304.

The previous prime is 20677801. The next prime is 20677819. The reversal of 20677814 is 41877602.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20677819) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 15359 + ... + 16650.

It is an arithmetic number, because the mean of its divisors is an integer number (2160675).

Almost surely, 2^20677814 is an apocalyptic number.

20677814 is a deficient number, since it is larger than the sum of its proper divisors (13892986).

20677814 is a wasteful number, since it uses less digits than its factorization.

20677814 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32047.

The product of its (nonzero) digits is 18816, while the sum is 35.

The square root of 20677814 is about 4547.2864435837. The cubic root of 20677814 is about 274.4742085670.

The spelling of 20677814 in words is "twenty million, six hundred seventy-seven thousand, eight hundred fourteen".