6969664 has 28 divisors (see below), whose sum is σ = 14896084. Its totient is φ = 3216384.

The previous prime is 6969661. The next prime is 6969671. The reversal of 6969664 is 4669696.

It can be written as a sum of positive squares in 2 ways, for example, as 1016064 + 5953600 = 1008^2 + 2440^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6969661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3357 + ... + 5020.

It is an arithmetic number, because the mean of its divisors is an integer number (532003).

Almost surely, 2^6969664 is an apocalyptic number.

6969664 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

6969664 is an abundant number, since it is smaller than the sum of its proper divisors (7926420).

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

6969664 is a wasteful number, since it uses less digits than its factorization.

6969664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8402 (or 8392 counting only the distinct ones).

The product of its digits is 419904, while the sum is 46.

The square root of 6969664 is about 2640.0121211843. The cubic root of 6969664 is about 191.0163815523.

Subtracting from 6969664 its reverse (4669696), we obtain a cube (2299968 = 132³).

It can be divided in two parts, 69696 and 64, that multiplied together give a square (4460544 = 2112²).

The spelling of 6969664 in words is "six million, nine hundred sixty-nine thousand, six hundred sixty-four".