612822 has 16 divisors (see below), whose sum is σ = 1400832. Its totient is φ = 175080.

The previous prime is 612817. The next prime is 612823. The reversal of 612822 is 228216.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (612823) by changing a digit.

612822 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7254 + ... + 7337.

It is an arithmetic number, because the mean of its divisors is an integer number (87552).

2⁶¹²⁸²² is an apocalyptic number.

612822 is an abundant number, since it is smaller than the sum of its proper divisors (788010).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

612822 is a wasteful number, since it uses less digits than its factorization.

612822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14603.

The product of its digits is 384, while the sum is 21.

The square root of 612822 is about 782.8294833487. The cubic root of 612822 is about 84.9398420936.

The spelling of 612822 in words is "six hundred twelve thousand, eight hundred twenty-two".