20346769 has 2 divisors, whose sum is σ = 20346770. Its totient is φ = 20346768.

The previous prime is 20346763. The next prime is 20346791. The reversal of 20346769 is 96764302.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12006225 + 8340544 = 3465^2 + 2888^2 .

It is a cyclic number.

It is not a de Polignac number, because 20346769 - 2²¹ = 18249617 is a prime.

It is a super-2 number, since 2×20346769² = 827982017478722, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (20346763) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10173384 + 10173385.

It is an arithmetic number, because the mean of its divisors is an integer number (10173385).

Almost surely, 2^20346769 is an apocalyptic number.

It is an amenable number.

20346769 is a deficient number, since it is larger than the sum of its proper divisors (1).

20346769 is an equidigital number, since it uses as much as digits as its factorization.

20346769 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54432, while the sum is 37.

The square root of 20346769 is about 4510.7392963903. The cubic root of 20346769 is about 273.0015743222.

It can be divided in two parts, 20346 and 769, that added together give a triangular number (21115 = T₂₀₅).

The spelling of 20346769 in words is "twenty million, three hundred forty-six thousand, seven hundred sixty-nine".