6978957007 has 8 divisors (see below), whose sum is σ = 7652857680. Its totient is φ = 6311631360.

The previous prime is 6978957001. The next prime is 6978957043. The reversal of 6978957007 is 7007598796.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6978957007 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6978957001) 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, 1641532 + ... + 1645777.

It is an arithmetic number, because the mean of its divisors is an integer number (956607210).

Almost surely, 2^6978957007 is an apocalyptic number.

6978957007 is a deficient number, since it is larger than the sum of its proper divisors (673900673).

6978957007 is a wasteful number, since it uses less digits than its factorization.

6978957007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3287513.

The product of its (nonzero) digits is 6667920, while the sum is 58.

The square root of 6978957007 is about 83540.1520647407. The cubic root of 6978957007 is about 1911.0124112868.

The spelling of 6978957007 in words is "six billion, nine hundred seventy-eight million, nine hundred fifty-seven thousand, seven".