621599104 has 192 divisors, whose sum is σ = 1562803200. Its totient is φ = 244823040.

The previous prime is 621599071. The next prime is 621599119. The reversal of 621599104 is 401995126.

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 23 ways as a sum of consecutive naturals, for example, 4471867 + ... + 4472005.

It is an arithmetic number, because the mean of its divisors is an integer number (8139600).

Almost surely, 2^621599104 is an apocalyptic number.

621599104 is a gapful number since it is divisible by the number (64) 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 621599104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (781401600).

621599104 is an abundant number, since it is smaller than the sum of its proper divisors (941204096).

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

621599104 is a wasteful number, since it uses less digits than its factorization.

621599104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221 (or 202 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 37.

The square root of 621599104 is about 24931.8892986472. The cubic root of 621599104 is about 853.4343652078.

The spelling of 621599104 in words is "six hundred twenty-one million, five hundred ninety-nine thousand, one hundred four".