766628 has 6 divisors (see below), whose sum is σ = 1341606. Its totient is φ = 383312.

The previous prime is 766609. The next prime is 766637. The reversal of 766628 is 826667.

766628 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 719104 + 47524 = 848^2 + 218^2 .

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 766628.

It is an unprimeable number.

766628 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, 95825 + ... + 95832.

It is an arithmetic number, because the mean of its divisors is an integer number (223601).

2⁷⁶⁶⁶²⁸ is an apocalyptic number.

It is an amenable number.

766628 is a deficient number, since it is larger than the sum of its proper divisors (574978).

766628 is a wasteful number, since it uses less digits than its factorization.

766628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191661 (or 191659 counting only the distinct ones).

The product of its digits is 24192, while the sum is 35.

The square root of 766628 is about 875.5729552699. The cubic root of 766628 is about 91.5225739838.

The spelling of 766628 in words is "seven hundred sixty-six thousand, six hundred twenty-eight".