66502765 has 8 divisors (see below), whose sum is σ = 91203840. Its totient is φ = 45601872.

The previous prime is 66502763. The next prime is 66502783. The reversal of 66502765 is 56720566.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 66502765 - 2¹ = 66502763 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66502763) 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, 950005 + ... + 950074.

It is an arithmetic number, because the mean of its divisors is an integer number (11400480).

Almost surely, 2^66502765 is an apocalyptic number.

It is an amenable number.

66502765 is a deficient number, since it is larger than the sum of its proper divisors (24701075).

66502765 is a wasteful number, since it uses less digits than its factorization.

66502765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1900091.

The product of its (nonzero) digits is 75600, while the sum is 37.

The square root of 66502765 is about 8154.9227464152. The cubic root of 66502765 is about 405.1475659997.

The spelling of 66502765 in words is "sixty-six million, five hundred two thousand, seven hundred sixty-five".