766306 has 4 divisors (see below), whose sum is σ = 1149462. Its totient is φ = 383152.

The previous prime is 766301. The next prime is 766313. The reversal of 766306 is 603667.

766306 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 can be written as a sum of positive squares in only one way, i.e., 625681 + 140625 = 791^2 + 375^2 .

It is not an unprimeable number, because it can be changed into a prime (766301) by changing a digit.

766306 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 191575 + ... + 191578.

2⁷⁶⁶³⁰⁶ is an apocalyptic number.

766306 is a deficient number, since it is larger than the sum of its proper divisors (383156).

766306 is a wasteful number, since it uses less digits than its factorization.

766306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 383155.

The product of its (nonzero) digits is 4536, while the sum is 28.

The square root of 766306 is about 875.3890563629. The cubic root of 766306 is about 91.5097583827.

It can be divided in two parts, 76630 and 6, that added together give a triangular number (76636 = T₃₉₁).

The spelling of 766306 in words is "seven hundred sixty-six thousand, three hundred six".