20777323 has 6 divisors (see below), whose sum is σ = 24169596. Its totient is φ = 17809092.

The previous prime is 20777321. The next prime is 20777329. The reversal of 20777323 is 32377702.

It is not a de Polignac number, because 20777323 - 2¹ = 20777321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20777321) 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 5 ways as a sum of consecutive naturals, for example, 211965 + ... + 212062.

It is an arithmetic number, because the mean of its divisors is an integer number (4028266).

Almost surely, 2^20777323 is an apocalyptic number.

20777323 is a deficient number, since it is larger than the sum of its proper divisors (3392273).

20777323 is an equidigital number, since it uses as much as digits as its factorization.

20777323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 424041 (or 424034 counting only the distinct ones).

The product of its (nonzero) digits is 12348, while the sum is 31.

The square root of 20777323 is about 4558.2148918189. The cubic root of 20777323 is about 274.9137933646.

The spelling of 20777323 in words is "twenty million, seven hundred seventy-seven thousand, three hundred twenty-three".