765242513 has 4 divisors (see below), whose sum is σ = 874562880. Its totient is φ = 655922148.

The previous prime is 765242501. The next prime is 765242519. The reversal of 765242513 is 315242567.

765242513 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 an emirpimes, since its reverse is a distinct semiprime: 315242567 = 359 ⋅878113.

It is not a de Polignac number, because 765242513 - 2¹⁰ = 765241489 is a prime.

It is a super-2 number, since 2×765242513² = 1171192207405110338, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (765242519) 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, 54660173 + ... + 54660186.

It is an arithmetic number, because the mean of its divisors is an integer number (218640720).

Almost surely, 2^765242513 is an apocalyptic number.

It is an amenable number.

765242513 is a deficient number, since it is larger than the sum of its proper divisors (109320367).

765242513 is a wasteful number, since it uses less digits than its factorization.

765242513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109320366.

The product of its digits is 50400, while the sum is 35.

The square root of 765242513 is about 27663.0170624970. The cubic root of 765242513 is about 914.6740607028.

The spelling of 765242513 in words is "seven hundred sixty-five million, two hundred forty-two thousand, five hundred thirteen".