12654619 has 2 divisors, whose sum is σ = 12654620. Its totient is φ = 12654618.

The previous prime is 12654617. The next prime is 12654641. The reversal of 12654619 is 91645621.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12654619 - 2¹ = 12654617 is a prime.

It is a super-2 number, since 2×12654619² = 320278764070322, which contains 22 as substring.

Together with 12654617, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (12654611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6327309 + 6327310.

It is an arithmetic number, because the mean of its divisors is an integer number (6327310).

Almost surely, 2^12654619 is an apocalyptic number.

12654619 is a deficient number, since it is larger than the sum of its proper divisors (1).

12654619 is an equidigital number, since it uses as much as digits as its factorization.

12654619 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12960, while the sum is 34.

The square root of 12654619 is about 3557.3331303098. Note that the first 3 decimals coincide. The cubic root of 12654619 is about 233.0324268573.

It can be divided in two parts, 126 and 54619, that added together give a palindrome (54745).

The spelling of 12654619 in words is "twelve million, six hundred fifty-four thousand, six hundred nineteen".