6685213392 has 160 divisors (see below), whose sum is σ = 22543973760. Its totient is φ = 1869972480.

The previous prime is 6685213369. The next prime is 6685213411. The reversal of 6685213392 is 2933125866.

6685213392 is a `hidden beast` number, since 6 + 6 + 8 + 521 + 33 + 92 = 666.

It is a super-2 number, since 2×6685213392² = 89384156193152291328, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7668 + ... + 115884.

It is an arithmetic number, because the mean of its divisors is an integer number (140899836).

Almost surely, 2^6685213392 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 6685213392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11271986880).

6685213392 is an abundant number, since it is smaller than the sum of its proper divisors (15858760368).

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

6685213392 is a wasteful number, since it uses less digits than its factorization.

6685213392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108258 (or 108246 counting only the distinct ones).

The product of its digits is 466560, while the sum is 45.

The square root of 6685213392 is about 81763.1542444395. The cubic root of 6685213392 is about 1883.8157554419.

The spelling of 6685213392 in words is "six billion, six hundred eighty-five million, two hundred thirteen thousand, three hundred ninety-two".