764224 has 14 divisors (see below), whose sum is σ = 1516634. Its totient is φ = 382080.

The previous prime is 764209. The next prime is 764233. The reversal of 764224 is 422467.

It can be written as a sum of positive squares in only one way, i.e., 577600 + 186624 = 760^2 + 432^2 .

It is a nialpdrome in base 16.

It is a congruent number.

It is an unprimeable number.

764224 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, 5907 + ... + 6034.

It is an arithmetic number, because the mean of its divisors is an integer number (108331).

2⁷⁶⁴²²⁴ is an apocalyptic number.

It is an amenable number.

764224 is a deficient number, since it is larger than the sum of its proper divisors (752410).

764224 is a wasteful number, since it uses less digits than its factorization.

764224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11953 (or 11943 counting only the distinct ones).

The product of its digits is 2688, while the sum is 25.

The square root of 764224 is about 874.1990619990. The cubic root of 764224 is about 91.4268080017.

The spelling of 764224 in words is "seven hundred sixty-four thousand, two hundred twenty-four".