52668665 has 16 divisors (see below), whose sum is σ = 76033920. Its totient is φ = 34214400.

The previous prime is 52668619. The next prime is 52668667. The reversal of 52668665 is 56686625.

It is a happy number.

It is not a de Polignac number, because 52668665 - 2⁸ = 52668409 is a prime.

It is not an unprimeable number, because it can be changed into a prime (52668667) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38936 + ... + 40265.

It is an arithmetic number, because the mean of its divisors is an integer number (4752120).

Almost surely, 2^52668665 is an apocalyptic number.

It is an amenable number.

52668665 is a deficient number, since it is larger than the sum of its proper divisors (23365255).

52668665 is a wasteful number, since it uses less digits than its factorization.

52668665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79232.

The product of its digits is 518400, while the sum is 44.

The square root of 52668665 is about 7257.3180307880. The cubic root of 52668665 is about 374.8441782241.

It can be divided in two parts, 5266 and 8665, that added together give a palindrome (13931).

The spelling of 52668665 in words is "fifty-two million, six hundred sixty-eight thousand, six hundred sixty-five".