6978129 has 8 divisors (see below), whose sum is σ = 9339840. Its totient is φ = 4634256.

The previous prime is 6978113. The next prime is 6978133. The reversal of 6978129 is 9218796.

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

It is not a de Polignac number, because 6978129 - 2⁴ = 6978113 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6978199) 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, 3517 + ... + 5130.

It is an arithmetic number, because the mean of its divisors is an integer number (1167480).

Almost surely, 2^6978129 is an apocalyptic number.

It is an amenable number.

6978129 is a deficient number, since it is larger than the sum of its proper divisors (2361711).

6978129 is a wasteful number, since it uses less digits than its factorization.

6978129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8919.

The product of its digits is 54432, while the sum is 42.

The square root of 6978129 is about 2641.6148470207. The cubic root of 6978129 is about 191.0936831978.

The spelling of 6978129 in words is "six million, nine hundred seventy-eight thousand, one hundred twenty-nine".