620253004521 has 8 divisors (see below), whose sum is σ = 828452351584. Its totient is φ = 412777830240.

The previous prime is 620253004463. The next prime is 620253004523. The reversal of 620253004521 is 125400352026.

620253004521 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 620253004521 - 2¹⁸ = 620252742377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (620253004523) 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, 181041196 + ... + 181044621.

It is an arithmetic number, because the mean of its divisors is an integer number (103556543948).

Almost surely, 2^620253004521 is an apocalyptic number.

It is an amenable number.

620253004521 is a deficient number, since it is larger than the sum of its proper divisors (208199347063).

620253004521 is a wasteful number, since it uses less digits than its factorization.

620253004521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 362086391.

The product of its (nonzero) digits is 14400, while the sum is 30.

Adding to 620253004521 its reverse (125400352026), we get a palindrome (745653356547).

The spelling of 620253004521 in words is "six hundred twenty billion, two hundred fifty-three million, four thousand, five hundred twenty-one".