766723 has 4 divisors (see below), whose sum is σ = 791488. Its totient is φ = 741960.

The previous prime is 766721. The next prime is 766739. The reversal of 766723 is 327667.

766723 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.

It is a cyclic number.

It is not a de Polignac number, because 766723 - 2¹ = 766721 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31), and also a Moran number because the ratio is a prime number: 24733 = 766723 / (7 + 6 + 6 + 7 + 2 + 3).

It is a Duffinian number.

766723 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (766721) 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, 12336 + ... + 12397.

It is an arithmetic number, because the mean of its divisors is an integer number (197872).

2⁷⁶⁶⁷²³ is an apocalyptic number.

766723 is a deficient number, since it is larger than the sum of its proper divisors (24765).

766723 is a wasteful number, since it uses less digits than its factorization.

766723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24764.

The product of its digits is 10584, while the sum is 31.

The square root of 766723 is about 875.6272037802. The cubic root of 766723 is about 91.5263542985.

It can be divided in two parts, 7 and 66723, that multiplied together give a triangular number (467061 = T₉₆₆).

The spelling of 766723 in words is "seven hundred sixty-six thousand, seven hundred twenty-three".