68554512 has 150 divisors (see below), whose sum is σ = 215539962. Its totient is φ = 21026304.

The previous prime is 68554511. The next prime is 68554517. The reversal of 68554512 is 21545586.

It can be written as a sum of positive squares in 3 ways, for example, as 8088336 + 60466176 = 2844^2 + 7776^2 .

It is a super-2 number, since 2×68554512² = 9399442231116288, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68554511) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 218868 + ... + 219180.

Almost surely, 2^68554512 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 68554512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (107769981).

68554512 is an abundant number, since it is smaller than the sum of its proper divisors (146985450).

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

68554512 is a wasteful number, since it uses less digits than its factorization.

68554512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 359 (or 331 counting only the distinct ones).

The product of its digits is 48000, while the sum is 36.

The square root of 68554512 is about 8279.7652140625. The cubic root of 68554512 is about 409.2719819019.

The spelling of 68554512 in words is "sixty-eight million, five hundred fifty-four thousand, five hundred twelve".