627779372640 has 192 divisors, whose sum is σ = 2273540742144. Its totient is φ = 142633064448.

The previous prime is 627779372621. The next prime is 627779372669. The reversal of 627779372640 is 46273977726.

It is a Harshad number since it is a multiple of its sum of digits (60).

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 31 ways as a sum of consecutive naturals, for example, 1722 + ... + 1120518.

It is an arithmetic number, because the mean of its divisors is an integer number (11841358032).

Almost surely, 2^627779372640 is an apocalyptic number.

627779372640 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 627779372640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1136770371072).

627779372640 is an abundant number, since it is smaller than the sum of its proper divisors (1645761369504).

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

627779372640 is a wasteful number, since it uses less digits than its factorization.

627779372640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1118989 (or 1118981 counting only the distinct ones).

The product of its (nonzero) digits is 37340352, while the sum is 60.

The spelling of 627779372640 in words is "six hundred twenty-seven billion, seven hundred seventy-nine million, three hundred seventy-two thousand, six hundred forty".