620145886 has 16 divisors (see below), whose sum is σ = 975973248. Its totient is φ = 295149600.

The previous prime is 620145881. The next prime is 620145893. The reversal of 620145886 is 688541026.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (620145881) 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, 78205 + ... + 85768.

It is an arithmetic number, because the mean of its divisors is an integer number (60998328).

Almost surely, 2^620145886 is an apocalyptic number.

620145886 is a deficient number, since it is larger than the sum of its proper divisors (355827362).

620145886 is a wasteful number, since it uses less digits than its factorization.

620145886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164067.

The product of its (nonzero) digits is 92160, while the sum is 40.

The square root of 620145886 is about 24902.7284850476. The cubic root of 620145886 is about 852.7687733354.

The spelling of 620145886 in words is "six hundred twenty million, one hundred forty-five thousand, eight hundred eighty-six".