2591387 has 8 divisors (see below), whose sum is σ = 2720256. Its totient is φ = 2463912.

The previous prime is 2591363. The next prime is 2591389. The reversal of 2591387 is 7831952.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2591387 - 2⁸ = 2591131 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2591389) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6878 + ... + 7244.

It is an arithmetic number, because the mean of its divisors is an integer number (340032).

2^2591387 is an apocalyptic number.

2591387 is a deficient number, since it is larger than the sum of its proper divisors (128869).

2591387 is a wasteful number, since it uses less digits than its factorization.

2591387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 697.

The product of its digits is 15120, while the sum is 35.

The square root of 2591387 is about 1609.7785561996. The cubic root of 2591387 is about 137.3548793972.

The spelling of 2591387 in words is "two million, five hundred ninety-one thousand, three hundred eighty-seven".