8261387 has 4 divisors (see below), whose sum is σ = 8307720. Its totient is φ = 8215056.

The previous prime is 8261381. The next prime is 8261399. The reversal of 8261387 is 7831628.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8261387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8261381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22898 + ... + 23255.

It is an arithmetic number, because the mean of its divisors is an integer number (2076930).

Almost surely, 2^8261387 is an apocalyptic number.

8261387 is a deficient number, since it is larger than the sum of its proper divisors (46333).

8261387 is a wasteful number, since it uses less digits than its factorization.

8261387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46332.

The product of its digits is 16128, while the sum is 35.

The square root of 8261387 is about 2874.2628620222. The cubic root of 8261387 is about 202.1549231413.

The spelling of 8261387 in words is "eight million, two hundred sixty-one thousand, three hundred eighty-seven".