6698655 has 12 divisors (see below), whose sum is σ = 11611080. Its totient is φ = 3572592.

The previous prime is 6698651. The next prime is 6698677. The reversal of 6698655 is 5568966.

It is not a de Polignac number, because 6698655 - 2² = 6698651 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 148859 = 6698655 / (6 + 6 + 9 + 8 + 6 + 5 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 6698655.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6698651) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 74385 + ... + 74474.

It is an arithmetic number, because the mean of its divisors is an integer number (967590).

Almost surely, 2^6698655 is an apocalyptic number.

6698655 is a deficient number, since it is larger than the sum of its proper divisors (4912425).

6698655 is a wasteful number, since it uses less digits than its factorization.

6698655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148870 (or 148867 counting only the distinct ones).

The product of its digits is 388800, while the sum is 45.

The square root of 6698655 is about 2588.1759986523. The cubic root of 6698655 is about 188.5077473381.

The spelling of 6698655 in words is "six million, six hundred ninety-eight thousand, six hundred fifty-five".