6997655 has 8 divisors (see below), whose sum is σ = 9596832. Its totient is φ = 4798368.

The previous prime is 6997651. The next prime is 6997657. The reversal of 6997655 is 5567996.

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

It is a cyclic number.

It is not a de Polignac number, because 6997655 - 2² = 6997651 is a prime.

It is a d-powerful number, because it can be written as 6² + 9⁶ + 9⁷ + 7³ + 6⁸ + 5³ + 5⁵ .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6997651) 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 7 ways as a sum of consecutive naturals, for example, 99932 + ... + 100001.

It is an arithmetic number, because the mean of its divisors is an integer number (1199604).

Almost surely, 2^6997655 is an apocalyptic number.

6997655 is a deficient number, since it is larger than the sum of its proper divisors (2599177).

6997655 is a wasteful number, since it uses less digits than its factorization.

6997655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199945.

The product of its digits is 510300, while the sum is 47.

The square root of 6997655 is about 2645.3081105988. The cubic root of 6997655 is about 191.2717548266.

The spelling of 6997655 in words is "six million, nine hundred ninety-seven thousand, six hundred fifty-five".