622897408 has 216 divisors, whose sum is σ = 1610606592. Its totient is φ = 238436352.

The previous prime is 622897381. The next prime is 622897411. The reversal of 622897408 is 804798226.

It is a Harshad number since it is a multiple of its sum of digits (46).

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, 4904641 + ... + 4904767.

It is an arithmetic number, because the mean of its divisors is an integer number (7456512).

Almost surely, 2^622897408 is an apocalyptic number.

622897408 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 622897408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (805303296).

622897408 is an abundant number, since it is smaller than the sum of its proper divisors (987709184).

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

622897408 is a wasteful number, since it uses less digits than its factorization.

622897408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197 (or 176 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 46.

The square root of 622897408 is about 24957.9127332395. The cubic root of 622897408 is about 854.0281277128.

The spelling of 622897408 in words is "six hundred twenty-two million, eight hundred ninety-seven thousand, four hundred eight".