620552166 has 16 divisors (see below), whose sum is σ = 1336574064. Its totient is φ = 190939104.

The previous prime is 620552161. The next prime is 620552201. The reversal of 620552166 is 661255026.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (620552161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3977821 + ... + 3977976.

It is an arithmetic number, because the mean of its divisors is an integer number (83535879).

Almost surely, 2^620552166 is an apocalyptic number.

620552166 is an abundant number, since it is smaller than the sum of its proper divisors (716021898).

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

620552166 is a wasteful number, since it uses less digits than its factorization.

620552166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7955815.

The product of its (nonzero) digits is 21600, while the sum is 33.

The square root of 620552166 is about 24910.8844885122. The cubic root of 620552166 is about 852.9549592381.

The spelling of 620552166 in words is "six hundred twenty million, five hundred fifty-two thousand, one hundred sixty-six".