620424938 has 16 divisors (see below), whose sum is σ = 1065318720. Its totient is φ = 265463136.

The previous prime is 620424899. The next prime is 620424947. The reversal of 620424938 is 839424026.

It is a happy number.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27131 + ... + 44462.

It is an arithmetic number, because the mean of its divisors is an integer number (66582420).

Almost surely, 2^620424938 is an apocalyptic number.

620424938 is a deficient number, since it is larger than the sum of its proper divisors (444893782).

620424938 is a wasteful number, since it uses less digits than its factorization.

620424938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72221.

The product of its (nonzero) digits is 82944, while the sum is 38.

The square root of 620424938 is about 24908.3306947696. The cubic root of 620424938 is about 852.8966632146.

The spelling of 620424938 in words is "six hundred twenty million, four hundred twenty-four thousand, nine hundred thirty-eight".