964820 has 24 divisors (see below), whose sum is σ = 2133600. Its totient is φ = 365472.

The previous prime is 964793. The next prime is 964823. The reversal of 964820 is 28469.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 964820.

It is not an unprimeable number, because it can be changed into a prime (964823) 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 7 ways as a sum of consecutive naturals, for example, 890 + ... + 1649.

It is an arithmetic number, because the mean of its divisors is an integer number (88900).

2⁹⁶⁴⁸²⁰ is an apocalyptic number.

It is an amenable number.

964820 is an abundant number, since it is smaller than the sum of its proper divisors (1168780).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

964820 is a wasteful number, since it uses less digits than its factorization.

964820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2567 (or 2565 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 964820 is about 982.2525133590. The cubic root of 964820 is about 98.8133066267.

The spelling of 964820 in words is "nine hundred sixty-four thousand, eight hundred twenty".