13662469 has 2 divisors, whose sum is σ = 13662470. Its totient is φ = 13662468.

The previous prime is 13662457. The next prime is 13662521. The reversal of 13662469 is 96426631.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11985444 + 1677025 = 3462^2 + 1295^2 .

It is a cyclic number.

It is not a de Polignac number, because 13662469 - 2²³ = 5273861 is a prime.

It is a super-2 number, since 2×13662469² = 373326118351922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13662409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6831234 + 6831235.

It is an arithmetic number, because the mean of its divisors is an integer number (6831235).

Almost surely, 2^13662469 is an apocalyptic number.

It is an amenable number.

13662469 is a deficient number, since it is larger than the sum of its proper divisors (1).

13662469 is an equidigital number, since it uses as much as digits as its factorization.

13662469 is an evil number, because the sum of its binary digits is even.

The product of its digits is 46656, while the sum is 37.

The square root of 13662469 is about 3696.2777222498. The cubic root of 13662469 is about 239.0615493633.

The spelling of 13662469 in words is "thirteen million, six hundred sixty-two thousand, four hundred sixty-nine".