626048640 has 192 divisors, whose sum is σ = 2470815360. Its totient is φ = 143087616.

The previous prime is 626048623. The next prime is 626048641. The reversal of 626048640 is 46840626.

It is a happy number.

626048640 is a `hidden beast` number, since 6 + 2 + 6 + 0 + 4 + 8 + 640 = 666.

It is a tau number, because it is divible by the number of its divisors (192).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 626048595 and 626048604.

It is not an unprimeable number, because it can be changed into a prime (626048641) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 32557 + ... + 48083.

It is an arithmetic number, because the mean of its divisors is an integer number (12868830).

Almost surely, 2^626048640 is an apocalyptic number.

626048640 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 626048640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1235407680).

626048640 is an abundant number, since it is smaller than the sum of its proper divisors (1844766720).

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

626048640 is a wasteful number, since it uses less digits than its factorization.

626048640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15559 (or 15544 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 36.

The square root of 626048640 is about 25020.9640102055. The cubic root of 626048640 is about 855.4658792710.

The spelling of 626048640 in words is "six hundred twenty-six million, forty-eight thousand, six hundred forty".