1001622 has 16 divisors (see below), whose sum is σ = 2025072. Its totient is φ = 330240.

The previous prime is 1001621. The next prime is 1001629. The reversal of 1001622 is 2261001.

1001622 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 1001598 and 1001607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001621) 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, 279 + ... + 1442.

It is an arithmetic number, because the mean of its divisors is an integer number (126567).

2^1001622 is an apocalyptic number.

1001622 is an abundant number, since it is smaller than the sum of its proper divisors (1023450).

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

1001622 is a wasteful number, since it uses less digits than its factorization.

1001622 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1823.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 1001622 is about 1000.8106714059. The cubic root of 1001622 is about 100.0540374609.

Adding to 1001622 its reverse (2261001), we get a palindrome (3262623).

The spelling of 1001622 in words is "one million, one thousand, six hundred twenty-two".