621062008 has 64 divisors (see below), whose sum is σ = 1399104000. Its totient is φ = 252692352.

The previous prime is 621061951. The next prime is 621062009. The reversal of 621062008 is 800260126.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (621062009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 177298 + ... + 180766.

It is an arithmetic number, because the mean of its divisors is an integer number (21861000).

Almost surely, 2^621062008 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 621062008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (699552000).

621062008 is an abundant number, since it is smaller than the sum of its proper divisors (778041992).

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

621062008 is a wasteful number, since it uses less digits than its factorization.

621062008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3644 (or 3640 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 621062008 is about 24921.1157053612. The cubic root of 621062008 is about 853.1884895488.

The spelling of 621062008 in words is "six hundred twenty-one million, sixty-two thousand, eight".