964840 has 16 divisors (see below), whose sum is σ = 2170980. Its totient is φ = 385920.

The previous prime is 964829. The next prime is 964861. The reversal of 964840 is 48469.

It can be written as a sum of positive squares in 2 ways, for example, as 933156 + 31684 = 966^2 + 178^2 .

It is a super-3 number, since 3×964840³ = 2694555633323712000, which contains 333 as substring.

It is an unprimeable number.

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, 12021 + ... + 12100.

2⁹⁶⁴⁸⁴⁰ is an apocalyptic number.

It is an amenable number.

964840 is an abundant number, since it is smaller than the sum of its proper divisors (1206140).

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

964840 is a wasteful number, since it uses less digits than its factorization.

964840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24132 (or 24128 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 964840 is about 982.2626939877. The cubic root of 964840 is about 98.8139893974.

The spelling of 964840 in words is "nine hundred sixty-four thousand, eight hundred forty".