620566166 has 12 divisors (see below), whose sum is σ = 1023165276. Its totient is φ = 282075420.

The previous prime is 620566159. The next prime is 620566169. The reversal of 620566166 is 661665026.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (620566169) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1281920 + ... + 1282403.

It is an arithmetic number, because the mean of its divisors is an integer number (85263773).

Almost surely, 2^620566166 is an apocalyptic number.

620566166 is a deficient number, since it is larger than the sum of its proper divisors (402599110).

620566166 is a wasteful number, since it uses less digits than its factorization.

620566166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2564347 (or 2564336 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 38.

The square root of 620566166 is about 24911.1654885917. The cubic root of 620566166 is about 852.9613735683.

The spelling of 620566166 in words is "six hundred twenty million, five hundred sixty-six thousand, one hundred sixty-six".