6690849120 has 576 divisors, whose sum is σ = 25410490560. Its totient is φ = 1596063744.

The previous prime is 6690849101. The next prime is 6690849127. The reversal of 6690849120 is 219480966.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6690849127) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 75178036 + ... + 75178124.

It is an arithmetic number, because the mean of its divisors is an integer number (44115435).

Almost surely, 2^6690849120 is an apocalyptic number.

6690849120 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6690849120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12705245280).

6690849120 is an abundant number, since it is smaller than the sum of its proper divisors (18719641440).

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

6690849120 is a wasteful number, since it uses less digits than its factorization.

6690849120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247 (or 236 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 45.

The square root of 6690849120 is about 81797.6107230523. The cubic root of 6690849120 is about 1884.3449677317.

The spelling of 6690849120 in words is "six billion, six hundred ninety million, eight hundred forty-nine thousand, one hundred twenty".