1622001 has 8 divisors (see below), whose sum is σ = 2215584. Its totient is φ = 1054880.

The previous prime is 1621993. The next prime is 1622009. The reversal of 1622001 is 1002261.

It is an interprime number because it is at equal distance from previous prime (1621993) and next prime (1622009).

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 1622001 - 2³ = 1621993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1622009) 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, 6471 + ... + 6716.

It is an arithmetic number, because the mean of its divisors is an integer number (276948).

2^1622001 is an apocalyptic number.

It is an amenable number.

1622001 is a deficient number, since it is larger than the sum of its proper divisors (593583).

1622001 is a wasteful number, since it uses less digits than its factorization.

1622001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13231.

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

The square root of 1622001 is about 1273.5780305894. The cubic root of 1622001 is about 117.4943652044.

Adding to 1622001 its reverse (1002261), we get a palindrome (2624262).

The spelling of 1622001 in words is "one million, six hundred twenty-two thousand, one".