1227621 has 8 divisors (see below), whose sum is σ = 1733184. Its totient is φ = 770240.

The previous prime is 1227619. The next prime is 1227637. The reversal of 1227621 is 1267221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1227621 - 2¹ = 1227619 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1225621) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11985 + ... + 12086.

It is an arithmetic number, because the mean of its divisors is an integer number (216648).

2^1227621 is an apocalyptic number.

It is an amenable number.

1227621 is a deficient number, since it is larger than the sum of its proper divisors (505563).

1227621 is a wasteful number, since it uses less digits than its factorization.

1227621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24091.

The product of its digits is 336, while the sum is 21.

The square root of 1227621 is about 1107.9805954980. The cubic root of 1227621 is about 107.0750049121.

The spelling of 1227621 in words is "one million, two hundred twenty-seven thousand, six hundred twenty-one".