620622642321 has 24 divisors (see below), whose sum is σ = 977989321920. Its totient is φ = 376120130400.

The previous prime is 620622642319. The next prime is 620622642329. The reversal of 620622642321 is 123246226026.

620622642321 is a `hidden beast` number, since 6 + 2 + 0 + 6 + 2 + 2 + 642 + 3 + 2 + 1 = 666.

It is not a de Polignac number, because 620622642321 - 2¹ = 620622642319 is a prime.

It is a super-2 number, since 2×620622642321² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (620622642329) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2738151 + ... + 2956131.

It is an arithmetic number, because the mean of its divisors is an integer number (40749555080).

Almost surely, 2^620622642321 is an apocalyptic number.

It is an amenable number.

620622642321 is a deficient number, since it is larger than the sum of its proper divisors (357366679599).

620622642321 is a wasteful number, since it uses less digits than its factorization.

620622642321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246757 (or 246754 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 36.

Adding to 620622642321 its reverse (123246226026), we get a palindrome (743868868347).

The spelling of 620622642321 in words is "six hundred twenty billion, six hundred twenty-two million, six hundred forty-two thousand, three hundred twenty-one".