65656506 has 16 divisors (see below), whose sum is σ = 133791264. Its totient is φ = 21472464.

The previous prime is 65656501. The next prime is 65656517. The reversal of 65656506 is 60565656.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (65656501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 102916 + ... + 103551.

It is an arithmetic number, because the mean of its divisors is an integer number (8361954).

Almost surely, 2^65656506 is an apocalyptic number.

65656506 is an abundant number, since it is smaller than the sum of its proper divisors (68134758).

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

65656506 is a wasteful number, since it uses less digits than its factorization.

65656506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206525.

The product of its (nonzero) digits is 162000, while the sum is 39.

The square root of 65656506 is about 8102.8702322078. The cubic root of 65656506 is about 403.4217006176.

It can be divided in two parts, 6565650 and 6, that added together give a palindrome (6565656).

The spelling of 65656506 in words is "sixty-five million, six hundred fifty-six thousand, five hundred six".