6995291940 has 648 divisors, whose sum is σ = 28220807160. Its totient is φ = 1398249216.

The previous prime is 6995291917. The next prime is 6995291993. The reversal of 6995291940 is 491925996.

6995291940 is a `hidden beast` number, since 69 + 9 + 529 + 19 + 40 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 2608349184 + 4386942756 = 51072^2 + 66234^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 215 ways as a sum of consecutive naturals, for example, 368173251 + ... + 368173269.

Almost surely, 2^6995291940 is an apocalyptic number.

6995291940 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 6995291940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14110403580).

6995291940 is an abundant number, since it is smaller than the sum of its proper divisors (21225515220).

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

6995291940 is a wasteful number, since it uses less digits than its factorization.

6995291940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106 (or 49 counting only the distinct ones).

The product of its (nonzero) digits is 1574640, while the sum is 54.

The square root of 6995291940 is about 83637.8618808492. The cubic root of 6995291940 is about 1912.5022201692.

The spelling of 6995291940 in words is "six billion, nine hundred ninety-five million, two hundred ninety-one thousand, nine hundred forty".