620066670 has 64 divisors (see below), whose sum is σ = 1585578240. Its totient is φ = 154649088.

The previous prime is 620066651. The next prime is 620066677. The reversal of 620066670 is 76660026.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (620066677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 79401 + ... + 86859.

It is an arithmetic number, because the mean of its divisors is an integer number (24774660).

Almost surely, 2^620066670 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 620066670, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (792789120).

620066670 is an abundant number, since it is smaller than the sum of its proper divisors (965511570).

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

620066670 is a wasteful number, since it uses less digits than its factorization.

620066670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7649.

The product of its (nonzero) digits is 18144, while the sum is 33.

The square root of 620066670 is about 24901.1379258057. The cubic root of 620066670 is about 852.7324615529.

The spelling of 620066670 in words is "six hundred twenty million, sixty-six thousand, six hundred seventy".