765438 has 16 divisors (see below), whose sum is σ = 1541136. Its totient is φ = 253440.

The previous prime is 765437. The next prime is 765439. The reversal of 765438 is 834567.

It is an interprime number because it is at equal distance from previous prime (765437) and next prime (765439).

It is an alternating number because its digits alternate between odd and even.

It is a junction number, because it is equal to n+sod(n) for n = 765399 and 765408.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 765438.

It is not an unprimeable number, because it can be changed into a prime (765437) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 828 + ... + 1488.

It is an arithmetic number, because the mean of its divisors is an integer number (96321).

2⁷⁶⁵⁴³⁸ is an apocalyptic number.

765438 is an abundant number, since it is smaller than the sum of its proper divisors (775698).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

765438 is a wasteful number, since it uses less digits than its factorization.

765438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 859.

The product of its digits is 20160, while the sum is 33.

The square root of 765438 is about 874.8931363315. The cubic root of 765438 is about 91.4751940879.

The spelling of 765438 in words is "seven hundred sixty-five thousand, four hundred thirty-eight".