6349987 has 4 divisors (see below), whose sum is σ = 7257136. Its totient is φ = 5442840.

The previous prime is 6349969. The next prime is 6349997. The reversal of 6349987 is 7899436.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6349987 - 2⁷ = 6349859 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 (6349997) 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, 453564 + ... + 453577.

It is an arithmetic number, because the mean of its divisors is an integer number (1814284).

Almost surely, 2^6349987 is an apocalyptic number.

6349987 is a deficient number, since it is larger than the sum of its proper divisors (907149).

6349987 is an equidigital number, since it uses as much as digits as its factorization.

6349987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 907148.

The product of its digits is 326592, while the sum is 46.

The square root of 6349987 is about 2519.9180542232. The cubic root of 6349987 is about 185.1786635338.

The spelling of 6349987 in words is "six million, three hundred forty-nine thousand, nine hundred eighty-seven".