620949500 has 48 divisors (see below), whose sum is σ = 1378453440. Its totient is φ = 244296000.

The previous prime is 620949491. The next prime is 620949509. The reversal of 620949500 is 5949026.

It is an interprime number because it is at equal distance from previous prime (620949491) and next prime (620949509).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (620949509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20321 + ... + 40679.

It is an arithmetic number, because the mean of its divisors is an integer number (28717780).

Almost surely, 2^620949500 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 620949500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (689226720).

620949500 is an abundant number, since it is smaller than the sum of its proper divisors (757503940).

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

620949500 is a wasteful number, since it uses less digits than its factorization.

620949500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20439 (or 20427 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 35.

The square root of 620949500 is about 24918.8583205571. The cubic root of 620949500 is about 853.1369668741.

The spelling of 620949500 in words is "six hundred twenty million, nine hundred forty-nine thousand, five hundred".