622040436 has 72 divisors (see below), whose sum is σ = 1619045064. Its totient is φ = 201277440.

The previous prime is 622040399. The next prime is 622040501. The reversal of 622040436 is 634040226.

622040436 is a `hidden beast` number, since 6 + 220 + 4 + 0 + 436 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 205635600 + 416404836 = 14340^2 + 20406^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 183396 + ... + 186756.

It is an arithmetic number, because the mean of its divisors is an integer number (22486737).

Almost surely, 2^622040436 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 622040436, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (809522532).

622040436 is an abundant number, since it is smaller than the sum of its proper divisors (997004628).

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

622040436 is a wasteful number, since it uses less digits than its factorization.

622040436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3521 (or 3516 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

The square root of 622040436 is about 24940.7384814484. The cubic root of 622040436 is about 853.6362953525.

It can be divided in two parts, 6220 and 40436, that added together give a 6-th power (46656 = 6⁶).

The spelling of 622040436 in words is "six hundred twenty-two million, forty thousand, four hundred thirty-six".