621746496 has 224 divisors, whose sum is σ = 2133600000. Its totient is φ = 177472512.

The previous prime is 621746471. The next prime is 621746507. The reversal of 621746496 is 694647126.

It is a tau number, because it is divible by the number of its divisors (224).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 592180 + ... + 593228.

It is an arithmetic number, because the mean of its divisors is an integer number (9525000).

Almost surely, 2^621746496 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 621746496, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1066800000).

621746496 is an abundant number, since it is smaller than the sum of its proper divisors (1511853504).

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

621746496 is a wasteful number, since it uses less digits than its factorization.

621746496 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1091 (or 1061 counting only the distinct ones).

The product of its digits is 435456, while the sum is 45.

The square root of 621746496 is about 24934.8450165627. The cubic root of 621746496 is about 853.5018146063.

The spelling of 621746496 in words is "six hundred twenty-one million, seven hundred forty-six thousand, four hundred ninety-six".