765413273 has 4 divisors (see below), whose sum is σ = 765469200. Its totient is φ = 765357348.

The previous prime is 765413263. The next prime is 765413279. The reversal of 765413273 is 372314567.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 372314567 = 337 ⋅1104791.

It is a cyclic number.

It is not a de Polignac number, because 765413273 - 2¹⁴ = 765396889 is a prime.

It is a super-3 number, since 3×765413273³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (765413279) 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, 7886 + ... + 39912.

It is an arithmetic number, because the mean of its divisors is an integer number (191367300).

Almost surely, 2^765413273 is an apocalyptic number.

It is an amenable number.

765413273 is a deficient number, since it is larger than the sum of its proper divisors (55927).

765413273 is a wasteful number, since it uses less digits than its factorization.

765413273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55926.

The product of its digits is 105840, while the sum is 38.

The square root of 765413273 is about 27666.1033215739. The cubic root of 765413273 is about 914.7420906078.

The spelling of 765413273 in words is "seven hundred sixty-five million, four hundred thirteen thousand, two hundred seventy-three".