964640 has 24 divisors (see below), whose sum is σ = 2279340. Its totient is φ = 385792.

The previous prime is 964637. The next prime is 964661. The reversal of 964640 is 46469.

It can be written as a sum of positive squares in 2 ways, for example, as 929296 + 35344 = 964^2 + 188^2 .

It is a nialpdrome in base 16.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2855 + ... + 3174.

2⁹⁶⁴⁶⁴⁰ is an apocalyptic number.

It is an amenable number.

964640 is an abundant number, since it is smaller than the sum of its proper divisors (1314700).

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

964640 is a wasteful number, since it uses less digits than its factorization.

964640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6044 (or 6036 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 964640 is about 982.1608829515. The cubic root of 964640 is about 98.8071612658.

The spelling of 964640 in words is "nine hundred sixty-four thousand, six hundred forty".