68553450 has 108 divisors (see below), whose sum is σ = 214319430. Its totient is φ = 15664320.

The previous prime is 68553449. The next prime is 68553451. The reversal of 68553450 is 5435586.

68553450 is a `hidden beast` number, since 68 + 553 + 45 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (68553449) and next prime (68553451).

It can be written as a sum of positive squares in 3 ways, for example, as 39425841 + 29127609 = 6279^2 + 5397^2 .

It is not an unprimeable number, because it can be changed into a prime (68553451) 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 53 ways as a sum of consecutive naturals, for example, 20496 + ... + 23604.

Almost surely, 2^68553450 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68553450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (107159715).

68553450 is an abundant number, since it is smaller than the sum of its proper divisors (145765980).

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

68553450 is a wasteful number, since it uses less digits than its factorization.

68553450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3141 (or 3126 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 36.

The square root of 68553450 is about 8279.7010815609. The cubic root of 68553450 is about 409.2698685030.

It can be divided in two parts, 685534 and 50, that added together give a square (685584 = 828²).

The spelling of 68553450 in words is "sixty-eight million, five hundred fifty-three thousand, four hundred fifty".