627687216640 has 160 divisors (see below), whose sum is σ = 1666303778304. Its totient is φ = 224842506240.

The previous prime is 627687216623. The next prime is 627687216703. The reversal of 627687216640 is 46612786726.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (160).

It is a Harshad number since it is a multiple of its sum of digits (55).

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, 1720377 + ... + 2053063.

Almost surely, 2^627687216640 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 627687216640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (833151889152).

627687216640 is an abundant number, since it is smaller than the sum of its proper divisors (1038616561664).

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

627687216640 is a wasteful number, since it uses less digits than its factorization.

627687216640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 332788 (or 332772 counting only the distinct ones).

The product of its (nonzero) digits is 8128512, while the sum is 55.

The spelling of 627687216640 in words is "six hundred twenty-seven billion, six hundred eighty-seven million, two hundred sixteen thousand, six hundred forty".