6978434 has 16 divisors (see below), whose sum is σ = 11080800. Its totient is φ = 3286944.

The previous prime is 6978431. The next prime is 6978437. The reversal of 6978434 is 4348796.

It is an interprime number because it is at equal distance from previous prime (6978431) and next prime (6978437).

It is a junction number, because it is equal to n+sod(n) for n = 6978391 and 6978400.

It is not an unprimeable number, because it can be changed into a prime (6978431) 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, 8222 + ... + 9030.

It is an arithmetic number, because the mean of its divisors is an integer number (692550).

Almost surely, 2^6978434 is an apocalyptic number.

6978434 is a deficient number, since it is larger than the sum of its proper divisors (4102366).

6978434 is a wasteful number, since it uses less digits than its factorization.

6978434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1057.

The product of its digits is 145152, while the sum is 41.

The square root of 6978434 is about 2641.6725762289. The cubic root of 6978434 is about 191.0964672643.

The spelling of 6978434 in words is "six million, nine hundred seventy-eight thousand, four hundred thirty-four".