830644 has 6 divisors (see below), whose sum is σ = 1453634. Its totient is φ = 415320.

The previous prime is 830639. The next prime is 830657. The reversal of 830644 is 446038.

830644 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., 580644 + 250000 = 762^2 + 500^2 .

It is a congruent number.

It is an unprimeable number.

830644 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, 103827 + ... + 103834.

2⁸³⁰⁶⁴⁴ is an apocalyptic number.

It is an amenable number.

830644 is a deficient number, since it is larger than the sum of its proper divisors (622990).

830644 is a wasteful number, since it uses less digits than its factorization.

830644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207665 (or 207663 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 830644 is about 911.3967302992. The cubic root of 830644 is about 94.0022634131.

The spelling of 830644 in words is "eight hundred thirty thousand, six hundred forty-four".