8320261 has 4 divisors (see below), whose sum is σ = 8444512. Its totient is φ = 8196012.

The previous prime is 8320229. The next prime is 8320267. The reversal of 8320261 is 1620238.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 8320261 - 2⁵ = 8320229 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 (8320267) 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, 62025 + ... + 62158.

It is an arithmetic number, because the mean of its divisors is an integer number (2111128).

Almost surely, 2^8320261 is an apocalyptic number.

It is an amenable number.

8320261 is a deficient number, since it is larger than the sum of its proper divisors (124251).

8320261 is a wasteful number, since it uses less digits than its factorization.

8320261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124250.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 8320261 is about 2884.4862627511. The cubic root of 8320261 is about 202.6339996089.

Adding to 8320261 its reverse (1620238), we get a palindrome (9940499).

The spelling of 8320261 in words is "eight million, three hundred twenty thousand, two hundred sixty-one".