6690600000 has 840 divisors, whose sum is σ = 28811280960. Its totient is φ = 1503360000.

The previous prime is 6690599969. The next prime is 6690600023. The reversal of 6690600000 is 60966.

It is a tau number, because it is divible by the number of its divisors (840).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.

It is an unprimeable number.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 113399971 + ... + 113400029.

It is an arithmetic number, because the mean of its divisors is an integer number (34299144).

Almost surely, 2^6690600000 is an apocalyptic number.

6690600000 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 6690600000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14405640480).

6690600000 is an abundant number, since it is smaller than the sum of its proper divisors (22120680960).

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

6690600000 is an frugal number, since it uses more digits than its factorization.

6690600000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115 (or 76 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The square root of 6690600000 is about 81796.0879260127. The cubic root of 6690600000 is about 1884.3215808722.

Adding to 6690600000 its reverse (60966), we get a palindrome (6690660966).

The spelling of 6690600000 in words is "six billion, six hundred ninety million, six hundred thousand".