6698447140 has 192 divisors, whose sum is σ = 18222317568. Its totient is φ = 2007244800.

The previous prime is 6698447123. The next prime is 6698447153. The reversal of 6698447140 is 417448966.

It is a hoax number, since the sum of its digits (49) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 9213457 + ... + 9214183.

It is an arithmetic number, because the mean of its divisors is an integer number (94907904).

Almost surely, 2^6698447140 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 6698447140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9111158784).

6698447140 is an abundant number, since it is smaller than the sum of its proper divisors (11523870428).

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

6698447140 is a wasteful number, since it uses less digits than its factorization.

6698447140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 978 (or 976 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 49.

The square root of 6698447140 is about 81844.0415668728. The cubic root of 6698447140 is about 1885.0579751252.

The spelling of 6698447140 in words is "six billion, six hundred ninety-eight million, four hundred forty-seven thousand, one hundred forty".