6390866132 has 48 divisors (see below), whose sum is σ = 13322330112. Its totient is φ = 2624819040.

The previous prime is 6390866123. The next prime is 6390866143. The reversal of 6390866132 is 2316680936.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53663 + ... + 125145.

It is an arithmetic number, because the mean of its divisors is an integer number (277548544).

Almost surely, 2^6390866132 is an apocalyptic number.

6390866132 is a gapful number since it is divisible by the number (62) 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 6390866132, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6661165056).

6390866132 is an abundant number, since it is smaller than the sum of its proper divisors (6931463980).

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

6390866132 is a wasteful number, since it uses less digits than its factorization.

6390866132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71628 (or 71626 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 44.

The square root of 6390866132 is about 79942.8929423998. The cubic root of 6390866132 is about 1855.7518700225.

The spelling of 6390866132 in words is "six billion, three hundred ninety million, eight hundred sixty-six thousand, one hundred thirty-two".