6906847407 has 8 divisors (see below), whose sum is σ = 9320083584. Its totient is φ = 4549088088.

The previous prime is 6906847391. The next prime is 6906847417. The reversal of 6906847407 is 7047486096.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6906847407 - 2⁴ = 6906847391 is a prime.

It is a super-2 number, since 2×6906847407² = 95409082207165247298, which contains 22 as substring.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 6906847407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6906847417) 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, 13868923 + ... + 13869420.

It is an arithmetic number, because the mean of its divisors is an integer number (1165010448).

Almost surely, 2^6906847407 is an apocalyptic number.

6906847407 is a deficient number, since it is larger than the sum of its proper divisors (2413236177).

6906847407 is a wasteful number, since it uses less digits than its factorization.

6906847407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27738429.

The product of its (nonzero) digits is 2032128, while the sum is 51.

The square root of 6906847407 is about 83107.4449553107. Note that the first 3 decimals coincide. The cubic root of 6906847407 is about 1904.4078095372.

The spelling of 6906847407 in words is "six billion, nine hundred six million, eight hundred forty-seven thousand, four hundred seven".