969640 has 32 divisors (see below), whose sum is σ = 2494080. Its totient is φ = 332352.

The previous prime is 969637. The next prime is 969641. The reversal of 969640 is 46969.

It is a Smith number, since the sum of its digits (34) coincides with the sum of the digits of its prime factors.

It is a nialpdrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 969596 and 969605.

It is not an unprimeable number, because it can be changed into a prime (969641) 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, 1452 + ... + 2011.

It is an arithmetic number, because the mean of its divisors is an integer number (77940).

2⁹⁶⁹⁶⁴⁰ is an apocalyptic number.

It is an amenable number.

969640 is an abundant number, since it is smaller than the sum of its proper divisors (1524440).

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

969640 is a wasteful number, since it uses less digits than its factorization.

969640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3481 (or 3477 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 34.

The square root of 969640 is about 984.7030009094. The cubic root of 969640 is about 98.9775822451.

The spelling of 969640 in words is "nine hundred sixty-nine thousand, six hundred forty".