622816 has 12 divisors (see below), whose sum is σ = 1226232. Its totient is φ = 311392.

The previous prime is 622813. The next prime is 622849. The reversal of 622816 is 618226.

It is a hoax number, since the sum of its digits (25) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (622813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9700 + ... + 9763.

It is an arithmetic number, because the mean of its divisors is an integer number (102186).

2⁶²²⁸¹⁶ is an apocalyptic number.

It is an amenable number.

622816 is a deficient number, since it is larger than the sum of its proper divisors (603416).

622816 is a wasteful number, since it uses less digits than its factorization.

622816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19473 (or 19465 counting only the distinct ones).

The product of its digits is 1152, while the sum is 25.

The square root of 622816 is about 789.1869233585. The cubic root of 622816 is about 85.3990921077.

It can be divided in two parts, 6 and 22816, that added together give a palindrome (22822).

The spelling of 622816 in words is "six hundred twenty-two thousand, eight hundred sixteen".