6687361 has 4 divisors (see below), whose sum is σ = 6692800. Its totient is φ = 6681924.

The previous prime is 6687353. The next prime is 6687367. The reversal of 6687361 is 1637866.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 6687361 - 2³ = 6687353 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 6687361.

It is not an unprimeable number, because it can be changed into a prime (6687367) 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, 100 + ... + 3658.

It is an arithmetic number, because the mean of its divisors is an integer number (1673200).

Almost surely, 2^6687361 is an apocalyptic number.

It is an amenable number.

6687361 is a deficient number, since it is larger than the sum of its proper divisors (5439).

6687361 is a wasteful number, since it uses less digits than its factorization.

6687361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5438.

The product of its digits is 36288, while the sum is 37.

The square root of 6687361 is about 2585.9932327831. The cubic root of 6687361 is about 188.4017457537.

Adding to 6687361 its product of digits (36288), we get a square (6723649 = 2593²).

The spelling of 6687361 in words is "six million, six hundred eighty-seven thousand, three hundred sixty-one".