622856640 has 168 divisors, whose sum is σ = 2300612112. Its totient is φ = 142356480.

The previous prime is 622856627. The next prime is 622856653. The reversal of 622856640 is 46658226.

It is an interprime number because it is at equal distance from previous prime (622856627) and next prime (622856653).

It is a tau number, because it is divible by the number of its divisors (168).

It is a congruent number.

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, 40420 + ... + 53660.

Almost surely, 2^622856640 is an apocalyptic number.

622856640 is a gapful number since it is divisible by the number (60) 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 622856640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1150306056).

622856640 is an abundant number, since it is smaller than the sum of its proper divisors (1677755472).

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

622856640 is a wasteful number, since it uses less digits than its factorization.

622856640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13275 (or 13258 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 39.

The square root of 622856640 is about 24957.0959849098. The cubic root of 622856640 is about 854.0094955497.

The spelling of 622856640 in words is "six hundred twenty-two million, eight hundred fifty-six thousand, six hundred forty".