620511233321 has 8 divisors (see below), whose sum is σ = 714739599360. Its totient is φ = 527678843328.

The previous prime is 620511233263. The next prime is 620511233327. The reversal of 620511233321 is 123332115026.

It is a happy number.

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

It is not a de Polignac number, because 620511233321 - 2²⁶ = 620444124457 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (620511233327) 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, 348993056 + ... + 348994833.

It is an arithmetic number, because the mean of its divisors is an integer number (89342449920).

Almost surely, 2^620511233321 is an apocalyptic number.

It is an amenable number.

620511233321 is a deficient number, since it is larger than the sum of its proper divisors (94228366039).

620511233321 is a wasteful number, since it uses less digits than its factorization.

620511233321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 697988023.

The product of its (nonzero) digits is 6480, while the sum is 29.

Adding to 620511233321 its reverse (123332115026), we get a palindrome (743843348347).

The spelling of 620511233321 in words is "six hundred twenty billion, five hundred eleven million, two hundred thirty-three thousand, three hundred twenty-one".