622887 has 4 divisors (see below), whose sum is σ = 830520. Its totient is φ = 415256.

The previous prime is 622879. The next prime is 622889. The reversal of 622887 is 788226.

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

It is a cyclic number.

It is not a de Polignac number, because 622887 - 2³ = 622879 is a prime.

It is a D-number.

It is a plaindrome in base 14.

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 622887.

It is not an unprimeable number, because it can be changed into a prime (622889) 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, 103812 + ... + 103817.

It is an arithmetic number, because the mean of its divisors is an integer number (207630).

2⁶²²⁸⁸⁷ is an apocalyptic number.

622887 is a deficient number, since it is larger than the sum of its proper divisors (207633).

622887 is a wasteful number, since it uses less digits than its factorization.

622887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207632.

The product of its digits is 10752, while the sum is 33.

The square root of 622887 is about 789.2319050824. The cubic root of 622887 is about 85.4023371031.

The spelling of 622887 in words is "six hundred twenty-two thousand, eight hundred eighty-seven".