20145767 has 2 divisors, whose sum is σ = 20145768. Its totient is φ = 20145766.

The previous prime is 20145743. The next prime is 20145791. The reversal of 20145767 is 76754102.

It is a balanced prime because it is at equal distance from previous prime (20145743) and next prime (20145791).

It is a cyclic number.

It is not a de Polignac number, because 20145767 - 2¹⁴ = 20129383 is a prime.

It is a plaindrome in base 16.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20144767) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10072883 + 10072884.

It is an arithmetic number, because the mean of its divisors is an integer number (10072884).

Almost surely, 2^20145767 is an apocalyptic number.

20145767 is a deficient number, since it is larger than the sum of its proper divisors (1).

20145767 is an equidigital number, since it uses as much as digits as its factorization.

20145767 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11760, while the sum is 32.

The square root of 20145767 is about 4488.4036137585. The cubic root of 20145767 is about 272.0996201921.

Adding to 20145767 its reverse (76754102), we get a palindrome (96899869).

The spelling of 20145767 in words is "twenty million, one hundred forty-five thousand, seven hundred sixty-seven".