6387091 has 4 divisors (see below), whose sum is σ = 6535672. Its totient is φ = 6238512.

The previous prime is 6387079. The next prime is 6387109. The reversal of 6387091 is 1907836.

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 6387091 - 2⁹ = 6386579 is a prime.

It is a Duffinian number.

6387091 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (6387001) 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, 74226 + ... + 74311.

It is an arithmetic number, because the mean of its divisors is an integer number (1633918).

Almost surely, 2^6387091 is an apocalyptic number.

6387091 is a deficient number, since it is larger than the sum of its proper divisors (148581).

6387091 is a wasteful number, since it uses less digits than its factorization.

6387091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148580.

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 6387091 is about 2527.2694751451. The cubic root of 6387091 is about 185.5386395922.

The spelling of 6387091 in words is "six million, three hundred eighty-seven thousand, ninety-one".