620410198 has 4 divisors (see below), whose sum is σ = 930615300. Its totient is φ = 310205098.

The previous prime is 620410187. The next prime is 620410243. The reversal of 620410198 is 891014026.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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 as a sum of consecutive naturals, namely, 155102548 + ... + 155102551.

It is an arithmetic number, because the mean of its divisors is an integer number (232653825).

Almost surely, 2^620410198 is an apocalyptic number.

620410198 is a deficient number, since it is larger than the sum of its proper divisors (310205102).

620410198 is a wasteful number, since it uses less digits than its factorization.

620410198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310205101.

The product of its (nonzero) digits is 3456, while the sum is 31.

The square root of 620410198 is about 24908.0348080695. The cubic root of 620410198 is about 852.8899088137.

The spelling of 620410198 in words is "six hundred twenty million, four hundred ten thousand, one hundred ninety-eight".