620978963712 has 144 divisors (see below), whose sum is σ = 1759001973120. Its totient is φ = 193806729216.

The previous prime is 620978963699. The next prime is 620978963741. The reversal of 620978963712 is 217369879026.

It is a super-2 number, since 2×620978963712² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2396589 + ... + 2643027.

It is an arithmetic number, because the mean of its divisors is an integer number (12215291480).

Almost surely, 2^620978963712 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 620978963712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (879500986560).

620978963712 is an abundant number, since it is smaller than the sum of its proper divisors (1138023009408).

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

620978963712 is a wasteful number, since it uses less digits than its factorization.

620978963712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246668 (or 246654 counting only the distinct ones).

The product of its (nonzero) digits is 13716864, while the sum is 60.

The spelling of 620978963712 in words is "six hundred twenty billion, nine hundred seventy-eight million, nine hundred sixty-three thousand, seven hundred twelve".