13645469 has 2 divisors, whose sum is σ = 13645470. Its totient is φ = 13645468.

The previous prime is 13645453. The next prime is 13645481. The reversal of 13645469 is 96454631.

13645469 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13410244 + 235225 = 3662^2 + 485^2 .

It is a cyclic number.

It is not a de Polignac number, because 13645469 - 2⁴ = 13645453 is a prime.

It is a super-2 number, since 2×13645469² = 372397648459922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13642469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6822734 + 6822735.

It is an arithmetic number, because the mean of its divisors is an integer number (6822735).

Almost surely, 2^13645469 is an apocalyptic number.

It is an amenable number.

13645469 is a deficient number, since it is larger than the sum of its proper divisors (1).

13645469 is an equidigital number, since it uses as much as digits as its factorization.

13645469 is an evil number, because the sum of its binary digits is even.

The product of its digits is 77760, while the sum is 38.

The square root of 13645469 is about 3693.9773957078. The cubic root of 13645469 is about 238.9623546737.

The spelling of 13645469 in words is "thirteen million, six hundred forty-five thousand, four hundred sixty-nine".