620744442 has 8 divisors (see below), whose sum is σ = 1241488896. Its totient is φ = 206914812.

The previous prime is 620744441. The next prime is 620744489. The reversal of 620744442 is 244447026.

It is a sphenic number, since it is the product of 3 distinct primes.

620744442 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (620744441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51728698 + ... + 51728709.

It is an arithmetic number, because the mean of its divisors is an integer number (155186112).

Almost surely, 2^620744442 is an apocalyptic number.

620744442 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

620744442 is a wasteful number, since it uses less digits than its factorization.

620744442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103457412.

The product of its (nonzero) digits is 43008, while the sum is 33.

The square root of 620744442 is about 24914.7434664698. The cubic root of 620744442 is about 853.0430452154.

The spelling of 620744442 in words is "six hundred twenty million, seven hundred forty-four thousand, four hundred forty-two".