765730145 has 32 divisors (see below), whose sum is σ = 987275520. Its totient is φ = 569796480.

The previous prime is 765730129. The next prime is 765730151. The reversal of 765730145 is 541037567.

It is not a de Polignac number, because 765730145 - 2⁴ = 765730129 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 765730099 and 765730108.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2494082 + ... + 2494388.

It is an arithmetic number, because the mean of its divisors is an integer number (30852360).

Almost surely, 2^765730145 is an apocalyptic number.

It is an amenable number.

765730145 is a deficient number, since it is larger than the sum of its proper divisors (221545375).

765730145 is an equidigital number, since it uses as much as digits as its factorization.

765730145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 422 (or 376 counting only the distinct ones).

The product of its (nonzero) digits is 88200, while the sum is 38.

The square root of 765730145 is about 27671.8294480145. The cubic root of 765730145 is about 914.8683039778.

The spelling of 765730145 in words is "seven hundred sixty-five million, seven hundred thirty thousand, one hundred forty-five".