620950900 has 72 divisors (see below), whose sum is σ = 1400769720. Its totient is φ = 238640640.

The previous prime is 620950867. The next prime is 620950907. The reversal of 620950900 is 9059026.

It can be written as a sum of positive squares in 12 ways, for example, as 420332004 + 200618896 = 20502^2 + 14164^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (620950907) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 802914 + ... + 803686.

It is an arithmetic number, because the mean of its divisors is an integer number (19455135).

Almost surely, 2^620950900 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 620950900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (700384860).

620950900 is an abundant number, since it is smaller than the sum of its proper divisors (779818820).

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

620950900 is a wasteful number, since it uses less digits than its factorization.

620950900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1093 (or 1086 counting only the distinct ones).

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

The square root of 620950900 is about 24918.8864117159. The cubic root of 620950900 is about 853.1376080378.

The spelling of 620950900 in words is "six hundred twenty million, nine hundred fifty thousand, nine hundred".