6699999750 has 64 divisors (see below), whose sum is σ = 16777215936. Its totient is φ = 1780896000.

The previous prime is 6699999749. The next prime is 6699999769. The reversal of 6699999750 is 579999966.

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, 220480 + ... + 249020.

It is an arithmetic number, because the mean of its divisors is an integer number (262143999).

Almost surely, 2^6699999750 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6699999750, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8388607968).

6699999750 is an abundant number, since it is smaller than the sum of its proper divisors (10077216186).

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

6699999750 is a wasteful number, since it uses less digits than its factorization.

6699999750 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28874 (or 28864 counting only the distinct ones).

The product of its (nonzero) digits is 74401740, while the sum is 69.

The square root of 6699999750 is about 81853.5261916064. The cubic root of 6699999750 is about 1885.2036075732.

The spelling of 6699999750 in words is "six billion, six hundred ninety-nine million, nine hundred ninety-nine thousand, seven hundred fifty".