12622761 has 6 divisors (see below), whose sum is σ = 18232890. Its totient is φ = 8415168.

The previous prime is 12622747. The next prime is 12622763. The reversal of 12622761 is 16722621.

It can be written as a sum of positive squares in only one way, i.e., 12425625 + 197136 = 3525^2 + 444^2 .

It is not a de Polignac number, because 12622761 - 2⁷ = 12622633 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12622763) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 701256 + ... + 701273.

It is an arithmetic number, because the mean of its divisors is an integer number (3038815).

Almost surely, 2^12622761 is an apocalyptic number.

It is an amenable number.

12622761 is a deficient number, since it is larger than the sum of its proper divisors (5610129).

12622761 is a wasteful number, since it uses less digits than its factorization.

12622761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1402535 (or 1402532 counting only the distinct ones).

The product of its digits is 2016, while the sum is 27.

The square root of 12622761 is about 3552.8525159370. The cubic root of 12622761 is about 232.8367095014.

The spelling of 12622761 in words is "twelve million, six hundred twenty-two thousand, seven hundred sixty-one".