8261797 has 4 divisors (see below), whose sum is σ = 8292780. Its totient is φ = 8230816.

The previous prime is 8261783. The next prime is 8261809. The reversal of 8261797 is 7971628.

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

It can be written as a sum of positive squares in 2 ways, for example, as 3876961 + 4384836 = 1969^2 + 2094^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8261797 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8201797) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15088 + ... + 15625.

It is an arithmetic number, because the mean of its divisors is an integer number (2073195).

Almost surely, 2^8261797 is an apocalyptic number.

It is an amenable number.

8261797 is a deficient number, since it is larger than the sum of its proper divisors (30983).

8261797 is a wasteful number, since it uses less digits than its factorization.

8261797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30982.

The product of its digits is 42336, while the sum is 40.

The square root of 8261797 is about 2874.3341837720. The cubic root of 8261797 is about 202.1582672991.

The spelling of 8261797 in words is "eight million, two hundred sixty-one thousand, seven hundred ninety-seven".