65506753 has 4 divisors (see below), whose sum is σ = 70545748. Its totient is φ = 60467760.

The previous prime is 65506747. The next prime is 65506757. The reversal of 65506753 is 35760556.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 41770369 + 23736384 = 6463^2 + 4872^2 .

It is a cyclic number.

It is not a de Polignac number, because 65506753 - 2²⁵ = 31952321 is a prime.

It is a super-2 number, since 2×65506753² = 8582269377206018, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (65506757) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2519478 + ... + 2519503.

It is an arithmetic number, because the mean of its divisors is an integer number (17636437).

Almost surely, 2^65506753 is an apocalyptic number.

It is an amenable number.

65506753 is a deficient number, since it is larger than the sum of its proper divisors (5038995).

65506753 is a wasteful number, since it uses less digits than its factorization.

65506753 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5038994.

The product of its (nonzero) digits is 94500, while the sum is 37.

The square root of 65506753 is about 8093.6242190999. The cubic root of 65506753 is about 403.1147516013.

The spelling of 65506753 in words is "sixty-five million, five hundred six thousand, seven hundred fifty-three".