68632789 has 4 divisors (see below), whose sum is σ = 69599520. Its totient is φ = 67666060.

The previous prime is 68632777. The next prime is 68632799. The reversal of 68632789 is 98723686.

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 68632789 - 2¹⁷ = 68501717 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68632799) 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, 483259 + ... + 483400.

It is an arithmetic number, because the mean of its divisors is an integer number (17399880).

Almost surely, 2^68632789 is an apocalyptic number.

It is an amenable number.

68632789 is a deficient number, since it is larger than the sum of its proper divisors (966731).

68632789 is an equidigital number, since it uses as much as digits as its factorization.

68632789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 966730.

The product of its digits is 870912, while the sum is 49.

The square root of 68632789 is about 8284.4908715020. The cubic root of 68632789 is about 409.4276944698.

The spelling of 68632789 in words is "sixty-eight million, six hundred thirty-two thousand, seven hundred eighty-nine".