6987278 has 8 divisors (see below), whose sum is σ = 10561320. Its totient is φ = 3466840.

The previous prime is 6987271. The next prime is 6987293. The reversal of 6987278 is 8727896.

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

It is an Ulam number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6987271) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13073 + ... + 13596.

It is an arithmetic number, because the mean of its divisors is an integer number (1320165).

Almost surely, 2^6987278 is an apocalyptic number.

6987278 is a deficient number, since it is larger than the sum of its proper divisors (3574042).

6987278 is a wasteful number, since it uses less digits than its factorization.

6987278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26802.

The product of its digits is 338688, while the sum is 47.

The square root of 6987278 is about 2643.3459856780. The cubic root of 6987278 is about 191.1771608078.

The spelling of 6987278 in words is "six million, nine hundred eighty-seven thousand, two hundred seventy-eight".