6749087616 has 256 divisors, whose sum is σ = 20939212800. Its totient is φ = 2135992320.

The previous prime is 6749087599. The next prime is 6749087629. The reversal of 6749087616 is 6167809476.

It is a happy number.

6749087616 is a `hidden beast` number, since 67 + 490 + 87 + 6 + 16 = 666.

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

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, 15658921 + ... + 15659351.

It is an arithmetic number, because the mean of its divisors is an integer number (81793800).

Almost surely, 2^6749087616 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 6749087616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10469606400).

6749087616 is an abundant number, since it is smaller than the sum of its proper divisors (14190125184).

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

6749087616 is a wasteful number, since it uses less digits than its factorization.

6749087616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 674 (or 656 counting only the distinct ones).

The product of its (nonzero) digits is 3048192, while the sum is 54.

The square root of 6749087616 is about 82152.8308459301. The cubic root of 6749087616 is about 1889.7964205012.

The spelling of 6749087616 in words is "six billion, seven hundred forty-nine million, eighty-seven thousand, six hundred sixteen".