830649 has 4 divisors (see below), whose sum is σ = 1107536. Its totient is φ = 553764.

The previous prime is 830639. The next prime is 830657. The reversal of 830649 is 946038.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 830649 - 2⁵ = 830617 is a prime.

It is a super-2 number, since 2×830649² = 1379955522402, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (830639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 138439 + ... + 138444.

It is an arithmetic number, because the mean of its divisors is an integer number (276884).

2⁸³⁰⁶⁴⁹ is an apocalyptic number.

It is an amenable number.

830649 is a deficient number, since it is larger than the sum of its proper divisors (276887).

830649 is a wasteful number, since it uses less digits than its factorization.

830649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276886.

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 830649 is about 911.3994733376. The cubic root of 830649 is about 94.0024520260.

The spelling of 830649 in words is "eight hundred thirty thousand, six hundred forty-nine".