620303345520 has 40 divisors (see below), whose sum is σ = 1922940371856. Its totient is φ = 165414225408.

The previous prime is 620303345407. The next prime is 620303345521. The reversal of 620303345520 is 25543303026.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (620303345521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1292298397 + ... + 1292298876.

Almost surely, 2^620303345520 is an apocalyptic number.

620303345520 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

620303345520 is an abundant number, since it is smaller than the sum of its proper divisors (1302637026336).

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

620303345520 is a wasteful number, since it uses less digits than its factorization.

620303345520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2584597289 (or 2584597283 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 33.

Adding to 620303345520 its reverse (25543303026), we get a palindrome (645846648546).

The spelling of 620303345520 in words is "six hundred twenty billion, three hundred three million, three hundred forty-five thousand, five hundred twenty".