620304073 has 4 divisors (see below), whose sum is σ = 633502080. Its totient is φ = 607106068.

The previous prime is 620304053. The next prime is 620304107. The reversal of 620304073 is 370403026.

620304073 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-620304073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (620304053) 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, 6598933 + ... + 6599026.

It is an arithmetic number, because the mean of its divisors is an integer number (158375520).

Almost surely, 2^620304073 is an apocalyptic number.

It is an amenable number.

620304073 is a deficient number, since it is larger than the sum of its proper divisors (13198007).

620304073 is a wasteful number, since it uses less digits than its factorization.

620304073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13198006.

The product of its (nonzero) digits is 3024, while the sum is 25.

The square root of 620304073 is about 24905.9043802870. The cubic root of 620304073 is about 852.8412753433.

Adding to 620304073 its reverse (370403026), we get a palindrome (990707099).

The spelling of 620304073 in words is "six hundred twenty million, three hundred four thousand, seventy-three".