65266506 has 48 divisors (see below), whose sum is σ = 148867200. Its totient is φ = 21195360.

The previous prime is 65266489. The next prime is 65266507. The reversal of 65266506 is 60566256.

It is not an unprimeable number, because it can be changed into a prime (65266507) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 90415 + ... + 91133.

It is an arithmetic number, because the mean of its divisors is an integer number (3101400).

Almost surely, 2^65266506 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65266506, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74433600).

65266506 is an abundant number, since it is smaller than the sum of its proper divisors (83600694).

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

65266506 is a wasteful number, since it uses less digits than its factorization.

65266506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 812 (or 765 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 36.

The square root of 65266506 is about 8078.7688418471. The cubic root of 65266506 is about 402.6213381074.

The spelling of 65266506 in words is "sixty-five million, two hundred sixty-six thousand, five hundred six".