1220622 has 16 divisors (see below), whose sum is σ = 2629200. Its totient is φ = 375552.

The previous prime is 1220599. The next prime is 1220623. The reversal of 1220622 is 2260221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7747 + ... + 7902.

It is an arithmetic number, because the mean of its divisors is an integer number (164325).

2^1220622 is an apocalyptic number.

1220622 is an abundant number, since it is smaller than the sum of its proper divisors (1408578).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1220622 is a wasteful number, since it uses less digits than its factorization.

1220622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15667.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 1220622 is about 1104.8176320099. The cubic root of 1220622 is about 106.8711290961.

Adding to 1220622 its reverse (2260221), we get a palindrome (3480843).

The spelling of 1220622 in words is "one million, two hundred twenty thousand, six hundred twenty-two".