20764351 has 2 divisors, whose sum is σ = 20764352. Its totient is φ = 20764350.

The previous prime is 20764307. The next prime is 20764357. The reversal of 20764351 is 15346702.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20764351 - 2⁷ = 20764223 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20764357) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10382175 + 10382176.

It is an arithmetic number, because the mean of its divisors is an integer number (10382176).

Almost surely, 2^20764351 is an apocalyptic number.

20764351 is a deficient number, since it is larger than the sum of its proper divisors (1).

20764351 is an equidigital number, since it uses as much as digits as its factorization.

20764351 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 20764351 is about 4556.7917441990. The cubic root of 20764351 is about 274.8565687300.

It can be divided in two parts, 20764 and 351, that added together give a triangular number (21115 = T₂₀₅).

The spelling of 20764351 in words is "twenty million, seven hundred sixty-four thousand, three hundred fifty-one".