65078273 has 4 divisors (see below), whose sum is σ = 70084308. Its totient is φ = 60072240.

The previous prime is 65078257. The next prime is 65078281. The reversal of 65078273 is 37287056.

It is a happy number.

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 4129024 + 60949249 = 2032^2 + 7807^2 .

It is a cyclic number.

It is not a de Polignac number, because 65078273 - 2⁴ = 65078257 is a prime.

It is a super-3 number, since 3×65078273³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65078203) 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, 2502998 + ... + 2503023.

It is an arithmetic number, because the mean of its divisors is an integer number (17521077).

Almost surely, 2^65078273 is an apocalyptic number.

It is an amenable number.

65078273 is a deficient number, since it is larger than the sum of its proper divisors (5006035).

65078273 is a wasteful number, since it uses less digits than its factorization.

65078273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5006034.

The product of its (nonzero) digits is 70560, while the sum is 38.

The square root of 65078273 is about 8067.1105731854. The cubic root of 65078273 is about 402.2339030514.

The spelling of 65078273 in words is "sixty-five million, seventy-eight thousand, two hundred seventy-three".