6988477 has 4 divisors (see below), whose sum is σ = 7137216. Its totient is φ = 6839740.

The previous prime is 6988463. The next prime is 6988483. The reversal of 6988477 is 7748896.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6988477 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6988477.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6988417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74299 + ... + 74392.

It is an arithmetic number, because the mean of its divisors is an integer number (1784304).

Almost surely, 2^6988477 is an apocalyptic number.

It is an amenable number.

6988477 is a deficient number, since it is larger than the sum of its proper divisors (148739).

6988477 is a wasteful number, since it uses less digits than its factorization.

6988477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148738.

The product of its digits is 677376, while the sum is 49.

The square root of 6988477 is about 2643.5727718374. The cubic root of 6988477 is about 191.1880953618.

The spelling of 6988477 in words is "six million, nine hundred eighty-eight thousand, four hundred seventy-seven".