5266640 has 40 divisors (see below), whose sum is σ = 12537888. Its totient is φ = 2056320.

The previous prime is 5266631. The next prime is 5266649. The reversal of 5266640 is 466625.

It is an interprime number because it is at equal distance from previous prime (5266631) and next prime (5266649).

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5266649) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2675 + ... + 4205.

Almost surely, 2^5266640 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5266640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6268944).

5266640 is an abundant number, since it is smaller than the sum of its proper divisors (7271248).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5266640 is a wasteful number, since it uses less digits than its factorization.

5266640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1587 (or 1581 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 5266640 is about 2294.9161204715. The cubic root of 5266640 is about 173.9847610735.

The spelling of 5266640 in words is "five million, two hundred sixty-six thousand, six hundred forty".