6691349 has 8 divisors (see below), whose sum is σ = 7706688. Its totient is φ = 5690880.

The previous prime is 6691337. The next prime is 6691361. The reversal of 6691349 is 9431966.

It is an interprime number because it is at equal distance from previous prime (6691337) and next prime (6691361).

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 6691349 - 2⁸ = 6691093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6691309) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2732 + ... + 4565.

It is an arithmetic number, because the mean of its divisors is an integer number (963336).

Almost surely, 2^6691349 is an apocalyptic number.

It is an amenable number.

6691349 is a deficient number, since it is larger than the sum of its proper divisors (1015339).

6691349 is a wasteful number, since it uses less digits than its factorization.

6691349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7435.

The product of its digits is 34992, while the sum is 38.

The square root of 6691349 is about 2586.7641948968. The cubic root of 6691349 is about 188.4391893659.

It can be divided in two parts, 669134 and 9, that multiplied together give a palindrome (6022206).

The spelling of 6691349 in words is "six million, six hundred ninety-one thousand, three hundred forty-nine".