622261 has 6 divisors (see below), whose sum is σ = 638786. Its totient is φ = 606000.

The previous prime is 622249. The next prime is 622277. The reversal of 622261 is 162226.

It can be written as a sum of positive squares in 3 ways, for example, as 244036 + 378225 = 494^2 + 615^2 .

It is not a de Polignac number, because 622261 - 2⁷ = 622133 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 (622241) 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 5 ways as a sum of consecutive naturals, for example, 6111 + ... + 6211.

2⁶²²²⁶¹ is an apocalyptic number.

622261 is a gapful number since it is divisible by the number (61) formed by its first and last digit.

It is an amenable number.

622261 is a deficient number, since it is larger than the sum of its proper divisors (16525).

622261 is an equidigital number, since it uses as much as digits as its factorization.

622261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263 (or 162 counting only the distinct ones).

The product of its digits is 288, while the sum is 19.

The square root of 622261 is about 788.8352172666. The cubic root of 622261 is about 85.3737177962.

Adding to 622261 its reverse (162226), we get a palindrome (784487).

The spelling of 622261 in words is "six hundred twenty-two thousand, two hundred sixty-one".