622621340 has 24 divisors (see below), whose sum is σ = 1426369392. Its totient is φ = 226407680.

The previous prime is 622621333. The next prime is 622621343. The reversal of 622621340 is 43126226.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (622621343) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1414829 + ... + 1415268.

It is an arithmetic number, because the mean of its divisors is an integer number (59432058).

Almost surely, 2^622621340 is an apocalyptic number.

It is an amenable number.

622621340 is an abundant number, since it is smaller than the sum of its proper divisors (803748052).

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

622621340 is a wasteful number, since it uses less digits than its factorization.

622621340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2830117 (or 2830115 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 622621340 is about 24952.3814494729. The cubic root of 622621340 is about 853.9019407069.

Adding to 622621340 its reverse (43126226), we get a palindrome (665747566).

The spelling of 622621340 in words is "six hundred twenty-two million, six hundred twenty-one thousand, three hundred forty".