622212640 has 96 divisors (see below), whose sum is σ = 1685867904. Its totient is φ = 212582400.

The previous prime is 622212637. The next prime is 622212641. The reversal of 622212640 is 46212226.

It is not an unprimeable number, because it can be changed into a prime (622212641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 387840 + ... + 389440.

It is an arithmetic number, because the mean of its divisors is an integer number (17561124).

Almost surely, 2^622212640 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 622212640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (842933952).

622212640 is an abundant number, since it is smaller than the sum of its proper divisors (1063655264).

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

622212640 is a wasteful number, since it uses less digits than its factorization.

622212640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1970 (or 1962 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 622212640 is about 24944.1905060076. The cubic root of 622212640 is about 853.7150608760.

Adding to 622212640 its reverse (46212226), we get a palindrome (668424866).

The spelling of 622212640 in words is "six hundred twenty-two million, two hundred twelve thousand, six hundred forty".