68825553 has 4 divisors (see below), whose sum is σ = 91767408. Its totient is φ = 45883700.

The previous prime is 68825551. The next prime is 68825563. The reversal of 68825553 is 35552886.

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 not a de Polignac number, because 68825553 - 2¹ = 68825551 is a prime.

It is not an unprimeable number, because it can be changed into a prime (68825551) 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 3 ways as a sum of consecutive naturals, for example, 11470923 + ... + 11470928.

It is an arithmetic number, because the mean of its divisors is an integer number (22941852).

Almost surely, 2^68825553 is an apocalyptic number.

It is an amenable number.

68825553 is a deficient number, since it is larger than the sum of its proper divisors (22941855).

68825553 is a wasteful number, since it uses less digits than its factorization.

68825553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22941854.

The product of its digits is 288000, while the sum is 42.

The square root of 68825553 is about 8296.1167421873. The cubic root of 68825553 is about 409.8106462529.

It can be divided in two parts, 68825 and 553, that added together give a triangular number (69378 = T₃₇₂).

The spelling of 68825553 in words is "sixty-eight million, eight hundred twenty-five thousand, five hundred fifty-three".