620731715700 has 144 divisors (see below), whose sum is σ = 1890973969920. Its totient is φ = 156777886080.

The previous prime is 620731715677. The next prime is 620731715743. The reversal of 620731715700 is 7517137026.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 28506217 + ... + 28527983.

It is an arithmetic number, because the mean of its divisors is an integer number (13131763680).

Almost surely, 2^620731715700 is an apocalyptic number.

620731715700 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 620731715700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (945486984960).

620731715700 is an abundant number, since it is smaller than the sum of its proper divisors (1270242254220).

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

620731715700 is a wasteful number, since it uses less digits than its factorization.

620731715700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26806 (or 26799 counting only the distinct ones).

The product of its (nonzero) digits is 61740, while the sum is 39.

The spelling of 620731715700 in words is "six hundred twenty billion, seven hundred thirty-one million, seven hundred fifteen thousand, seven hundred".