6657439348 has 48 divisors (see below), whose sum is σ = 13791826944. Its totient is φ = 2751621120.

The previous prime is 6657439319. The next prime is 6657439351. The reversal of 6657439348 is 8439347566.

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, 241236 + ... + 267412.

It is an arithmetic number, because the mean of its divisors is an integer number (287329728).

Almost surely, 2^6657439348 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 6657439348, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6895913472).

6657439348 is an abundant number, since it is smaller than the sum of its proper divisors (7134387596).

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

6657439348 is a wasteful number, since it uses less digits than its factorization.

6657439348 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26512 (or 26510 counting only the distinct ones).

The product of its digits is 13063680, while the sum is 55.

The square root of 6657439348 is about 81593.1329708573. The cubic root of 6657439348 is about 1881.2033329071.

The spelling of 6657439348 in words is "six billion, six hundred fifty-seven million, four hundred thirty-nine thousand, three hundred forty-eight".