622771 has 4 divisors (see below), whose sum is σ = 649872. Its totient is φ = 595672.

The previous prime is 622751. The next prime is 622777. The reversal of 622771 is 177226.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-622771 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 (622777) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13516 + ... + 13561.

It is an arithmetic number, because the mean of its divisors is an integer number (162468).

2⁶²²⁷⁷¹ is an apocalyptic number.

622771 is a deficient number, since it is larger than the sum of its proper divisors (27101).

622771 is a wasteful number, since it uses less digits than its factorization.

622771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27100.

The product of its digits is 1176, while the sum is 25.

The square root of 622771 is about 789.1584124876. The cubic root of 622771 is about 85.3970352928.

Adding to 622771 its reverse (177226), we get a palindrome (799997).

The spelling of 622771 in words is "six hundred twenty-two thousand, seven hundred seventy-one".