6427491 has 32 divisors (see below), whose sum is σ = 10483200. Its totient is φ = 3421440.

The previous prime is 6427489. The next prime is 6427493. The reversal of 6427491 is 1947246.

It is a happy number.

6427491 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (6427489) and next prime (6427493).

It is not a de Polignac number, because 6427491 - 2¹ = 6427489 is a prime.

6427491 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (6427493) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 35421 + ... + 35601.

It is an arithmetic number, because the mean of its divisors is an integer number (327600).

Almost surely, 2^6427491 is an apocalyptic number.

6427491 is a deficient number, since it is larger than the sum of its proper divisors (4055709).

6427491 is a wasteful number, since it uses less digits than its factorization.

6427491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 299.

The product of its digits is 12096, while the sum is 33.

The square root of 6427491 is about 2535.2496918450. The cubic root of 6427491 is about 185.9290109487.

The spelling of 6427491 in words is "six million, four hundred twenty-seven thousand, four hundred ninety-one".