68884553 has 4 divisors (see below), whose sum is σ = 68909460. Its totient is φ = 68859648.

The previous prime is 68884549. The next prime is 68884583. The reversal of 68884553 is 35548886.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 27962944 + 40921609 = 5288^2 + 6397^2 .

It is a cyclic number.

It is not a de Polignac number, because 68884553 - 2² = 68884549 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 68884498 and 68884507.

It is not an unprimeable number, because it can be changed into a prime (68884513) 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, 7700 + ... + 14037.

It is an arithmetic number, because the mean of its divisors is an integer number (17227365).

Almost surely, 2^68884553 is an apocalyptic number.

It is an amenable number.

68884553 is a deficient number, since it is larger than the sum of its proper divisors (24907).

68884553 is a wasteful number, since it uses less digits than its factorization.

68884553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24906.

The product of its digits is 921600, while the sum is 47.

The square root of 68884553 is about 8299.6718609834. The cubic root of 68884553 is about 409.9277147996.

The spelling of 68884553 in words is "sixty-eight million, eight hundred eighty-four thousand, five hundred fifty-three".