6427387 has 4 divisors (see below), whose sum is σ = 6532816. Its totient is φ = 6321960.

The previous prime is 6427367. The next prime is 6427433. The reversal of 6427387 is 7837246.

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 6427387 - 2⁷ = 6427259 is a prime.

It is a super-2 number, since 2×6427387² = 82622607295538, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6427367) 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, 52623 + ... + 52744.

It is an arithmetic number, because the mean of its divisors is an integer number (1633204).

Almost surely, 2^6427387 is an apocalyptic number.

6427387 is a deficient number, since it is larger than the sum of its proper divisors (105429).

6427387 is a wasteful number, since it uses less digits than its factorization.

6427387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105428.

The product of its digits is 56448, while the sum is 37.

The square root of 6427387 is about 2535.2291809618. The cubic root of 6427387 is about 185.9280081354.

The spelling of 6427387 in words is "six million, four hundred twenty-seven thousand, three hundred eighty-seven".