6667387830 has 96 divisors (see below), whose sum is σ = 18179834400. Its totient is φ = 1757935872.

The previous prime is 6667387823. The next prime is 6667387871. The reversal of 6667387830 is 387837666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 200856 + ... + 231684.

It is an arithmetic number, because the mean of its divisors is an integer number (189373275).

Almost surely, 2^6667387830 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6667387830, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9089917200).

6667387830 is an abundant number, since it is smaller than the sum of its proper divisors (11512446570).

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

6667387830 is a wasteful number, since it uses less digits than its factorization.

6667387830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30940 (or 30928 counting only the distinct ones).

The product of its (nonzero) digits is 6096384, while the sum is 54.

The square root of 6667387830 is about 81654.0741788185. The cubic root of 6667387830 is about 1882.1399193831.

The spelling of 6667387830 in words is "six billion, six hundred sixty-seven million, three hundred eighty-seven thousand, eight hundred thirty".