963640 has 16 divisors (see below), whose sum is σ = 2168280. Its totient is φ = 385440.

The previous prime is 963629. The next prime is 963643. The reversal of 963640 is 46369.

963640 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 963599 and 963608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (963643) by changing a digit.

963640 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 in 3 ways as a sum of consecutive naturals, for example, 12006 + ... + 12085.

2⁹⁶³⁶⁴⁰ is an apocalyptic number.

It is an amenable number.

963640 is an abundant number, since it is smaller than the sum of its proper divisors (1204640).

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

963640 is a wasteful number, since it uses less digits than its factorization.

963640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24102 (or 24098 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 28.

The square root of 963640 is about 981.6516693818. The cubic root of 963640 is about 98.7730064433.

The spelling of 963640 in words is "nine hundred sixty-three thousand, six hundred forty".