6685742592 has 480 divisors, whose sum is σ = 22118896800. Its totient is φ = 2006581248.

The previous prime is 6685742573. The next prime is 6685742597. The reversal of 6685742592 is 2952475866.

6685742592 is a `hidden beast` number, since 6 + 6 + 8 + 5 + 7 + 42 + 592 = 666.

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

Its product of digits (7257600) is a multiple of the sum of its prime divisors (160).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6685742597) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 61337034 + ... + 61337142.

It is an arithmetic number, because the mean of its divisors is an integer number (46081035).

Almost surely, 2^6685742592 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 6685742592, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11059448400).

6685742592 is an abundant number, since it is smaller than the sum of its proper divisors (15433154208).

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

6685742592 is a wasteful number, since it uses less digits than its factorization.

6685742592 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188 (or 160 counting only the distinct ones).

The product of its digits is 7257600, while the sum is 54.

The square root of 6685742592 is about 81766.3903569187. The cubic root of 6685742592 is about 1883.8654616086.

The spelling of 6685742592 in words is "six billion, six hundred eighty-five million, seven hundred forty-two thousand, five hundred ninety-two".