620712144 has 60 divisors (see below), whose sum is σ = 1870763076. Its totient is φ = 190987776.

The previous prime is 620712137. The next prime is 620712193. The reversal of 620712144 is 441217026.

620712144 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 72590400 + 548121744 = 8520^2 + 23412^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 163917 + ... + 167660.

Almost surely, 2^620712144 is an apocalyptic number.

It is an amenable number.

620712144 is an abundant number, since it is smaller than the sum of its proper divisors (1250050932).

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

620712144 is a wasteful number, since it uses less digits than its factorization.

620712144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 331604 (or 331595 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 620712144 is about 24914.0952876078. The cubic root of 620712144 is about 853.0282500435.

The spelling of 620712144 in words is "six hundred twenty million, seven hundred twelve thousand, one hundred forty-four".