6978450729 has 8 divisors (see below), whose sum is σ = 9309310560. Its totient is φ = 4649945696.

The previous prime is 6978450719. The next prime is 6978450761. The reversal of 6978450729 is 9270548796.

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

It is a cyclic number.

It is not a de Polignac number, because 6978450729 - 2¹¹ = 6978448681 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6978450719) 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, 581772 + ... + 593645.

It is an arithmetic number, because the mean of its divisors is an integer number (1163663820).

Almost surely, 2^6978450729 is an apocalyptic number.

It is an amenable number.

6978450729 is a deficient number, since it is larger than the sum of its proper divisors (2330859831).

6978450729 is a wasteful number, since it uses less digits than its factorization.

6978450729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1177399.

The product of its (nonzero) digits is 7620480, while the sum is 57.

The square root of 6978450729 is about 83537.1218620800. The cubic root of 6978450729 is about 1910.9661996568.

The spelling of 6978450729 in words is "six billion, nine hundred seventy-eight million, four hundred fifty thousand, seven hundred twenty-nine".