620381994 has 16 divisors (see below), whose sum is σ = 1241788320. Its totient is φ = 206623280.

The previous prime is 620381987. The next prime is 620382019. The reversal of 620381994 is 499183026.

620381994 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34692 + ... + 49439.

It is an arithmetic number, because the mean of its divisors is an integer number (77611770).

Almost surely, 2^620381994 is an apocalyptic number.

620381994 is an abundant number, since it is smaller than the sum of its proper divisors (621406326).

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

620381994 is a wasteful number, since it uses less digits than its factorization.

620381994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85365.

The product of its (nonzero) digits is 93312, while the sum is 42.

The square root of 620381994 is about 24907.4686389444. The cubic root of 620381994 is about 852.8769844229.

The spelling of 620381994 in words is "six hundred twenty million, three hundred eighty-one thousand, nine hundred ninety-four".