676765 has 4 divisors (see below), whose sum is σ = 812124. Its totient is φ = 541408.

The previous prime is 676763. The next prime is 676771. The reversal of 676765 is 567676.

676765 is an esthetic number in base 10, because in such base its adjacent digits differ by 1.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 356409 + 320356 = 597^2 + 566^2 .

It is a cyclic number.

It is not a de Polignac number, because 676765 - 2¹ = 676763 is a prime.

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

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (676763) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67672 + ... + 67681.

It is an arithmetic number, because the mean of its divisors is an integer number (203031).

2⁶⁷⁶⁷⁶⁵ is an apocalyptic number.

It is an amenable number.

676765 is a deficient number, since it is larger than the sum of its proper divisors (135359).

676765 is a wasteful number, since it uses less digits than its factorization.

676765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135358.

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

The square root of 676765 is about 822.6572797952. The cubic root of 676765 is about 87.7969232512.

It can be divided in two parts, 676 and 765, that added together give a palindrome (1441).

The spelling of 676765 in words is "six hundred seventy-six thousand, seven hundred sixty-five".