6781187630 has 128 divisors (see below), whose sum is σ = 15034429440. Its totient is φ = 2149539840.

The previous prime is 6781187629. The next prime is 6781187657. The reversal of 6781187630 is 367811876.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 28373051 + ... + 28373289.

It is an arithmetic number, because the mean of its divisors is an integer number (117456480).

Almost surely, 2^6781187630 is an apocalyptic number.

6781187630 is an abundant number, since it is smaller than the sum of its proper divisors (8253241810).

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

6781187630 is a wasteful number, since it uses less digits than its factorization.

6781187630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 594.

The product of its (nonzero) digits is 338688, while the sum is 47.

The square root of 6781187630 is about 82347.9667629991. The cubic root of 6781187630 is about 1892.7877665912.

The spelling of 6781187630 in words is "six billion, seven hundred eighty-one million, one hundred eighty-seven thousand, six hundred thirty".