8520266 has 4 divisors (see below), whose sum is σ = 12780402. Its totient is φ = 4260132.

The previous prime is 8520241. The next prime is 8520269. The reversal of 8520266 is 6620258.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6620258 = 2 ⋅3310129.

It can be written as a sum of positive squares in only one way, i.e., 6027025 + 2493241 = 2455^2 + 1579^2 .

It is not an unprimeable number, because it can be changed into a prime (8520269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2130065 + ... + 2130068.

Almost surely, 2^8520266 is an apocalyptic number.

8520266 is a deficient number, since it is larger than the sum of its proper divisors (4260136).

8520266 is a wasteful number, since it uses less digits than its factorization.

8520266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4260135.

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 8520266 is about 2918.9494685589. The cubic root of 8520266 is about 204.2448201328.

The spelling of 8520266 in words is "eight million, five hundred twenty thousand, two hundred sixty-six".