622144406 has 8 divisors (see below), whose sum is σ = 1005002544. Its totient is φ = 287143560.

The previous prime is 622144399. The next prime is 622144409. The reversal of 622144406 is 604441226.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (622144409) 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, 11964290 + ... + 11964341.

It is an arithmetic number, because the mean of its divisors is an integer number (125625318).

Almost surely, 2^622144406 is an apocalyptic number.

622144406 is a deficient number, since it is larger than the sum of its proper divisors (382858138).

622144406 is a wasteful number, since it uses less digits than its factorization.

622144406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23928646.

The product of its (nonzero) digits is 9216, while the sum is 29.

The square root of 622144406 is about 24942.8227352078. The cubic root of 622144406 is about 853.6838526152.

The spelling of 622144406 in words is "six hundred twenty-two million, one hundred forty-four thousand, four hundred six".