5240640266 has 4 divisors (see below), whose sum is σ = 7860960402. Its totient is φ = 2620320132.

The previous prime is 5240640263. The next prime is 5240640271. The reversal of 5240640266 is 6620460425.

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

It can be written as a sum of positive squares in only one way, i.e., 3614534641 + 1626105625 = 60121^2 + 40325^2 .

It is not an unprimeable number, because it can be changed into a prime (5240640263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1310160065 + ... + 1310160068.

Almost surely, 2^5240640266 is an apocalyptic number.

5240640266 is a deficient number, since it is larger than the sum of its proper divisors (2620320136).

5240640266 is a wasteful number, since it uses less digits than its factorization.

5240640266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2620320135.

The product of its (nonzero) digits is 69120, while the sum is 35.

The square root of 5240640266 is about 72392.2666173674. The cubic root of 5240640266 is about 1736.9798609101.

The spelling of 5240640266 in words is "five billion, two hundred forty million, six hundred forty thousand, two hundred sixty-six".