620342886 has 32 divisors (see below), whose sum is σ = 1358972640. Its totient is φ = 187905536.

The previous prime is 620342873. The next prime is 620342893. The reversal of 620342886 is 688243026.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 101901 + ... + 107816.

It is an arithmetic number, because the mean of its divisors is an integer number (42467895).

Almost surely, 2^620342886 is an apocalyptic number.

620342886 is an abundant number, since it is smaller than the sum of its proper divisors (738629754).

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

620342886 is a wasteful number, since it uses less digits than its factorization.

620342886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209768.

The product of its (nonzero) digits is 110592, while the sum is 39.

The square root of 620342886 is about 24906.6835608437. The cubic root of 620342886 is about 852.8590626616.

The spelling of 620342886 in words is "six hundred twenty million, three hundred forty-two thousand, eight hundred eighty-six".