8240261 has 4 divisors (see below), whose sum is σ = 8246892. Its totient is φ = 8233632.

The previous prime is 8240249. The next prime is 8240269. The reversal of 8240261 is 1620428.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 3976036 + 4264225 = 1994^2 + 2065^2 .

It is a cyclic number.

It is not a de Polignac number, because 8240261 - 2¹⁴ = 8223877 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 (8240269) 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, 830 + ... + 4143.

It is an arithmetic number, because the mean of its divisors is an integer number (2061723).

Almost surely, 2^8240261 is an apocalyptic number.

It is an amenable number.

8240261 is a deficient number, since it is larger than the sum of its proper divisors (6631).

8240261 is a wasteful number, since it uses less digits than its factorization.

8240261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6630.

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 8240261 is about 2870.5854803507. The cubic root of 8240261 is about 201.9824593468.

Adding to 8240261 its reverse (1620428), we get a palindrome (9860689).

The spelling of 8240261 in words is "eight million, two hundred forty thousand, two hundred sixty-one".