12653617 has 2 divisors, whose sum is σ = 12653618. Its totient is φ = 12653616.

The previous prime is 12653609. The next prime is 12653621. The reversal of 12653617 is 71635621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9541921 + 3111696 = 3089^2 + 1764^2 .

It is a cyclic number.

It is not a de Polignac number, because 12653617 - 2³ = 12653609 is a prime.

It is a super-2 number, since 2×12653617² = 320228046365378, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12653717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6326808 + 6326809.

It is an arithmetic number, because the mean of its divisors is an integer number (6326809).

Almost surely, 2^12653617 is an apocalyptic number.

It is an amenable number.

12653617 is a deficient number, since it is larger than the sum of its proper divisors (1).

12653617 is an equidigital number, since it uses as much as digits as its factorization.

12653617 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7560, while the sum is 31.

The square root of 12653617 is about 3557.1922916817. The cubic root of 12653617 is about 233.0262761478.

The spelling of 12653617 in words is "twelve million, six hundred fifty-three thousand, six hundred seventeen".