6997669 has 4 divisors (see below), whose sum is σ = 7997344. Its totient is φ = 5997996.

The previous prime is 6997663. The next prime is 6997687. The reversal of 6997669 is 9667996.

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 not a de Polignac number, because 6997669 - 2⁹ = 6997157 is a prime.

It is a super-2 number, since 2×6997669² = 97934742867122, which contains 22 as substring.

It is a Duffinian number.

6997669 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6997663) 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, 499827 + ... + 499840.

It is an arithmetic number, because the mean of its divisors is an integer number (1999336).

Almost surely, 2^6997669 is an apocalyptic number.

It is an amenable number.

6997669 is a deficient number, since it is larger than the sum of its proper divisors (999675).

6997669 is an equidigital number, since it uses as much as digits as its factorization.

6997669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 999674.

The product of its digits is 1102248, while the sum is 52.

The square root of 6997669 is about 2645.3107567921. The cubic root of 6997669 is about 191.2718823838.

The spelling of 6997669 in words is "six million, nine hundred ninety-seven thousand, six hundred sixty-nine".