68325553 has 4 divisors (see below), whose sum is σ = 68707440. Its totient is φ = 67943668.

The previous prime is 68325547. The next prime is 68325611. The reversal of 68325553 is 35552386.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68325553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68325853) 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, 190675 + ... + 191032.

It is an arithmetic number, because the mean of its divisors is an integer number (17176860).

Almost surely, 2^68325553 is an apocalyptic number.

It is an amenable number.

68325553 is a deficient number, since it is larger than the sum of its proper divisors (381887).

68325553 is a wasteful number, since it uses less digits than its factorization.

68325553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 381886.

The product of its digits is 108000, while the sum is 37.

The square root of 68325553 is about 8265.9272317145. The cubic root of 68325553 is about 408.8158435891.

The spelling of 68325553 in words is "sixty-eight million, three hundred twenty-five thousand, five hundred fifty-three".