622871 has 4 divisors (see below), whose sum is σ = 633144. Its totient is φ = 612600.

The previous prime is 622861. The next prime is 622879. The reversal of 622871 is 178226.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 178226 = 2 ⋅89113.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-622871 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 622871.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 622871.

It is not an unprimeable number, because it can be changed into a prime (622879) 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, 5045 + ... + 5166.

It is an arithmetic number, because the mean of its divisors is an integer number (158286).

2⁶²²⁸⁷¹ is an apocalyptic number.

622871 is a gapful number since it is divisible by the number (61) formed by its first and last digit.

622871 is a deficient number, since it is larger than the sum of its proper divisors (10273).

622871 is a wasteful number, since it uses less digits than its factorization.

622871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10272.

The product of its digits is 1344, while the sum is 26.

The square root of 622871 is about 789.2217685797. The cubic root of 622871 is about 85.4016058581.

The spelling of 622871 in words is "six hundred twenty-two thousand, eight hundred seventy-one".