6989678 has 4 divisors (see below), whose sum is σ = 10484520. Its totient is φ = 3494838.

The previous prime is 6989659. The next prime is 6989687. The reversal of 6989678 is 8769896.

6989678 is nontrivially palindromic in base 11.

It is a semiprime because it is the product of two primes.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1747418 + ... + 1747421.

It is an arithmetic number, because the mean of its divisors is an integer number (2621130).

Almost surely, 2^6989678 is an apocalyptic number.

6989678 is a deficient number, since it is larger than the sum of its proper divisors (3494842).

6989678 is a wasteful number, since it uses less digits than its factorization.

6989678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3494841.

The product of its digits is 1306368, while the sum is 53.

The square root of 6989678 is about 2643.7999167864. The cubic root of 6989678 is about 191.1990469015.

It can be divided in two parts, 6989 and 678, that added together give a palindrome (7667).

The spelling of 6989678 in words is "six million, nine hundred eighty-nine thousand, six hundred seventy-eight".