6909075140 has 24 divisors (see below), whose sum is σ = 15828063552. Its totient is φ = 2512390880.

The previous prime is 6909075091. The next prime is 6909075149. The reversal of 6909075140 is 415709096.

It is a super-3 number, since 3×6909075140³ (a number of 30 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (6909075149) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15702224 + ... + 15702663.

It is an arithmetic number, because the mean of its divisors is an integer number (659502648).

Almost surely, 2^6909075140 is an apocalyptic number.

It is an amenable number.

6909075140 is an abundant number, since it is smaller than the sum of its proper divisors (8918988412).

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

6909075140 is a wasteful number, since it uses less digits than its factorization.

6909075140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31404907 (or 31404905 counting only the distinct ones).

The product of its (nonzero) digits is 68040, while the sum is 41.

The square root of 6909075140 is about 83120.8466030033. The cubic root of 6909075140 is about 1904.6125366159.

The spelling of 6909075140 in words is "six billion, nine hundred nine million, seventy-five thousand, one hundred forty".