1227613 has 4 divisors (see below), whose sum is σ = 1248480. Its totient is φ = 1206748.

The previous prime is 1227563. The next prime is 1227619. The reversal of 1227613 is 3167221.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3167221 = 419 ⋅7559.

It is a cyclic number.

It is not a de Polignac number, because 1227613 - 2⁹ = 1227101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1227619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10345 + ... + 10462.

It is an arithmetic number, because the mean of its divisors is an integer number (312120).

2^1227613 is an apocalyptic number.

It is an amenable number.

1227613 is a deficient number, since it is larger than the sum of its proper divisors (20867).

1227613 is an equidigital number, since it uses as much as digits as its factorization.

1227613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20866.

The product of its digits is 504, while the sum is 22.

The square root of 1227613 is about 1107.9769853205. The cubic root of 1227613 is about 107.0747723208.

It can be divided in two parts, 1227 and 613, that multiplied together give a triangular number (752151 = T₁₂₂₆).

The spelling of 1227613 in words is "one million, two hundred twenty-seven thousand, six hundred thirteen".