622889629 has 4 divisors (see below), whose sum is σ = 624253084. Its totient is φ = 621526176.

The previous prime is 622889593. The next prime is 622889651. The reversal of 622889629 is 926988226.

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 275626404 + 347263225 = 16602^2 + 18635^2 .

It is a cyclic number.

It is not a de Polignac number, because 622889629 - 2²¹ = 620792477 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (622889669) 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, 681042 + ... + 681955.

It is an arithmetic number, because the mean of its divisors is an integer number (156063271).

Almost surely, 2^622889629 is an apocalyptic number.

It is an amenable number.

622889629 is a deficient number, since it is larger than the sum of its proper divisors (1363455).

622889629 is a wasteful number, since it uses less digits than its factorization.

622889629 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1363454.

The product of its digits is 1492992, while the sum is 52.

The square root of 622889629 is about 24957.7568903938. The cubic root of 622889629 is about 854.0245725461.

It can be divided in two parts, 62288 and 9629, that added together give a palindrome (71917).

The spelling of 622889629 in words is "six hundred twenty-two million, eight hundred eighty-nine thousand, six hundred twenty-nine".