620905900 has 36 divisors (see below), whose sum is σ = 1351302400. Its totient is φ = 247636800.

The previous prime is 620905867. The next prime is 620905931. The reversal of 620905900 is 9509026.

It is a super-3 number, since 3×620905900³ (a number of 27 digits) contains 333 as substring.

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 11 ways as a sum of consecutive naturals, for example, 26005 + ... + 43795.

Almost surely, 2^620905900 is an apocalyptic number.

It is an amenable number.

620905900 is an abundant number, since it is smaller than the sum of its proper divisors (730396500).

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

620905900 is a wasteful number, since it uses less digits than its factorization.

620905900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18154 (or 18147 counting only the distinct ones).

The product of its (nonzero) digits is 4860, while the sum is 31.

The square root of 620905900 is about 24917.9834657622. The cubic root of 620905900 is about 853.1169987218.

The spelling of 620905900 in words is "six hundred twenty million, nine hundred five thousand, nine hundred".