622404641 has 16 divisors (see below), whose sum is σ = 694310400. Its totient is φ = 555408000.

The previous prime is 622404623. The next prime is 622404647. The reversal of 622404641 is 146404226.

It is a happy number.

It is not a de Polignac number, because 622404641 - 2²² = 618210337 is a prime.

It is a super-3 number, since 3×622404641³ (a number of 27 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is not an unprimeable number, because it can be changed into a prime (622404647) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8816 + ... + 36366.

It is an arithmetic number, because the mean of its divisors is an integer number (43394400).

Almost surely, 2^622404641 is an apocalyptic number.

It is an amenable number.

622404641 is a deficient number, since it is larger than the sum of its proper divisors (71905759).

622404641 is a wasteful number, since it uses less digits than its factorization.

622404641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27640.

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

The square root of 622404641 is about 24948.0388207170. The cubic root of 622404641 is about 853.8028643469.

Adding to 622404641 its reverse (146404226), we get a palindrome (768808867).

The spelling of 622404641 in words is "six hundred twenty-two million, four hundred four thousand, six hundred forty-one".