620551301620 has 24 divisors (see below), whose sum is σ = 1303686072864. Its totient is φ = 248119884576.

The previous prime is 620551301611. The next prime is 620551301621. The reversal of 620551301620 is 26103155026.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (620551301621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6239182 + ... + 6337861.

It is an arithmetic number, because the mean of its divisors is an integer number (54320253036).

Almost surely, 2^620551301620 is an apocalyptic number.

It is an amenable number.

620551301620 is an abundant number, since it is smaller than the sum of its proper divisors (683134771244).

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

620551301620 is a wasteful number, since it uses less digits than its factorization.

620551301620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12579519 (or 12579517 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 31.

Adding to 620551301620 its reverse (26103155026), we get a palindrome (646654456646).

The spelling of 620551301620 in words is "six hundred twenty billion, five hundred fifty-one million, three hundred one thousand, six hundred twenty".