621488608 has 24 divisors (see below), whose sum is σ = 1317676248. Its totient is φ = 286840704.

The previous prime is 621488591. The next prime is 621488611. The reversal of 621488608 is 806884126.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 746566 + ... + 747397.

It is an arithmetic number, because the mean of its divisors is an integer number (54903177).

Almost surely, 2^621488608 is an apocalyptic number.

It is an amenable number.

621488608 is an abundant number, since it is smaller than the sum of its proper divisors (696187640).

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

621488608 is a wasteful number, since it uses less digits than its factorization.

621488608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1493986 (or 1493978 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 43.

The square root of 621488608 is about 24929.6732429448. The cubic root of 621488608 is about 853.3837931316.

It can be divided in two parts, 62148 and 8608, that added together give a square (70756 = 266²).

The spelling of 621488608 in words is "six hundred twenty-one million, four hundred eighty-eight thousand, six hundred eight".