1221627 has 8 divisors (see below), whose sum is σ = 1776960. Its totient is φ = 740360.

The previous prime is 1221601. The next prime is 1221631. The reversal of 1221627 is 7261221.

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 1221627 - 2⁷ = 1221499 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1221667) 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 7 ways as a sum of consecutive naturals, for example, 18477 + ... + 18542.

It is an arithmetic number, because the mean of its divisors is an integer number (222120).

2^1221627 is an apocalyptic number.

1221627 is a deficient number, since it is larger than the sum of its proper divisors (555333).

1221627 is a wasteful number, since it uses less digits than its factorization.

1221627 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37033.

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

The square root of 1221627 is about 1105.2723646233. The cubic root of 1221627 is about 106.9004518569.

Adding to 1221627 its reverse (7261221), we get a palindrome (8482848).

It can be divided in two parts, 1221 and 627, that multiplied together give a palindrome (765567).

The spelling of 1221627 in words is "one million, two hundred twenty-one thousand, six hundred twenty-seven".