1622261 has 8 divisors (see below), whose sum is σ = 1714944. Its totient is φ = 1532160.

The previous prime is 1622233. The next prime is 1622263.

It is a happy number.

1622261 is nontrivially palindromic in base 10.

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 1622261 - 2¹⁰ = 1621237 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1622263) 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, 725 + ... + 1941.

It is an arithmetic number, because the mean of its divisors is an integer number (214368).

2^1622261 is an apocalyptic number.

It is an amenable number.

1622261 is a deficient number, since it is larger than the sum of its proper divisors (92683).

1622261 is a wasteful number, since it uses less digits than its factorization.

1622261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1291.

The product of its digits is 288, while the sum is 20.

The square root of 1622261 is about 1273.6801011243. The cubic root of 1622261 is about 117.5006428213.

The spelling of 1622261 in words is "one million, six hundred twenty-two thousand, two hundred sixty-one".