53368668 has 72 divisors (see below), whose sum is σ = 139518288. Its totient is φ = 17192448.

The previous prime is 53368643. The next prime is 53368669. The reversal of 53368668 is 86686335.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53368669) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 158196 + ... + 158532.

It is an arithmetic number, because the mean of its divisors is an integer number (1937754).

Almost surely, 2^53368668 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53368668, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69759144).

53368668 is an abundant number, since it is smaller than the sum of its proper divisors (86149620).

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

53368668 is a wasteful number, since it uses less digits than its factorization.

53368668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 483 (or 478 counting only the distinct ones).

The product of its digits is 622080, while the sum is 45.

The square root of 53368668 is about 7305.3862320893. The cubic root of 53368668 is about 376.4975211870.

The spelling of 53368668 in words is "fifty-three million, three hundred sixty-eight thousand, six hundred sixty-eight".