52666636 has 24 divisors (see below), whose sum is σ = 101290896. Its totient is φ = 23761920.

The previous prime is 52666631. The next prime is 52666637. The reversal of 52666636 is 63666625.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (52666631) 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, 1660 + ... + 10396.

It is an arithmetic number, because the mean of its divisors is an integer number (4220454).

Almost surely, 2^52666636 is an apocalyptic number.

It is an amenable number.

52666636 is a deficient number, since it is larger than the sum of its proper divisors (48624260).

52666636 is a wasteful number, since it uses less digits than its factorization.

52666636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8889 (or 8887 counting only the distinct ones).

The product of its digits is 233280, while the sum is 40.

The square root of 52666636 is about 7257.1782395088. The cubic root of 52666636 is about 374.8393646814.

The spelling of 52666636 in words is "fifty-two million, six hundred sixty-six thousand, six hundred thirty-six".