6994742040 has 640 divisors, whose sum is σ = 28569784320. Its totient is φ = 1511654400.

The previous prime is 6994742011. The next prime is 6994742057. The reversal of 6994742040 is 402474996.

It is a super-2 number, since 2×6994742040² = 97852832412286723200, which contains 22 as substring.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 14362677 + ... + 14363163.

It is an arithmetic number, because the mean of its divisors is an integer number (44640288).

Almost surely, 2^6994742040 is an apocalyptic number.

6994742040 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 6994742040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14284892160).

6994742040 is an abundant number, since it is smaller than the sum of its proper divisors (21575042280).

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

6994742040 is a wasteful number, since it uses less digits than its factorization.

6994742040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 565 (or 552 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 45.

The square root of 6994742040 is about 83634.5744294786. The cubic root of 6994742040 is about 1912.4521049136.

The spelling of 6994742040 in words is "six billion, nine hundred ninety-four million, seven hundred forty-two thousand, forty".