6988906 has 4 divisors (see below), whose sum is σ = 10483362. Its totient is φ = 3494452.

The previous prime is 6988879. The next prime is 6988907. The reversal of 6988906 is 6098896.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 6713281 + 275625 = 2591^2 + 525^2 .

It is not an unprimeable number, because it can be changed into a prime (6988907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1747225 + ... + 1747228.

Almost surely, 2^6988906 is an apocalyptic number.

6988906 is a deficient number, since it is larger than the sum of its proper divisors (3494456).

6988906 is a wasteful number, since it uses less digits than its factorization.

6988906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3494455.

The product of its (nonzero) digits is 186624, while the sum is 46.

The square root of 6988906 is about 2643.6539107833. The cubic root of 6988906 is about 191.1920074214.

It can be divided in two parts, 698890 and 6, that added together give a palindrome (698896).

The spelling of 6988906 in words is "six million, nine hundred eighty-eight thousand, nine hundred six".