622020829 has 4 divisors (see below), whose sum is σ = 622169884. Its totient is φ = 621871776.

The previous prime is 622020823. The next prime is 622020857. The reversal of 622020829 is 928020226.

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

It can be written as a sum of positive squares in 2 ways, for example, as 356265625 + 265755204 = 18875^2 + 16302^2 .

It is a cyclic number.

It is not a de Polignac number, because 622020829 - 2³ = 622020821 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 622020829.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (622020821) 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, 68082 + ... + 76675.

It is an arithmetic number, because the mean of its divisors is an integer number (155542471).

Almost surely, 2^622020829 is an apocalyptic number.

It is an amenable number.

622020829 is a deficient number, since it is larger than the sum of its proper divisors (149055).

622020829 is a wasteful number, since it uses less digits than its factorization.

622020829 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149054.

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 622020829 is about 24940.3454065897. The cubic root of 622020829 is about 853.6273262557.

The spelling of 622020829 in words is "six hundred twenty-two million, twenty thousand, eight hundred twenty-nine".