765667 has 8 divisors (see below), whose sum is σ = 885600. Its totient is φ = 648384.

The previous prime is 765659. The next prime is 765673. The reversal of 765667 is 766567.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 765667 - 2³ = 765659 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (765467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9 + ... + 1237.

It is an arithmetic number, because the mean of its divisors is an integer number (110700).

2⁷⁶⁵⁶⁶⁷ is an apocalyptic number.

765667 is a deficient number, since it is larger than the sum of its proper divisors (119933).

765667 is a wasteful number, since it uses less digits than its factorization.

765667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1325.

The product of its digits is 52920, while the sum is 37.

The square root of 765667 is about 875.0239996709. The cubic root of 765667 is about 91.4843155455.

Subtracting 765667 from its reverse (766567), we obtain a square (900 = 30²).

The spelling of 765667 in words is "seven hundred sixty-five thousand, six hundred sixty-seven".