67828793 has 4 divisors (see below), whose sum is σ = 71818740. Its totient is φ = 63838848.

The previous prime is 67828777. The next prime is 67828811. The reversal of 67828793 is 39782876.

It is a happy number.

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 38093584 + 29735209 = 6172^2 + 5453^2 .

It is a cyclic number.

It is not a de Polignac number, because 67828793 - 2⁴ = 67828777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (67828703) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1994948 + ... + 1994981.

It is an arithmetic number, because the mean of its divisors is an integer number (17954685).

Almost surely, 2^67828793 is an apocalyptic number.

It is an amenable number.

67828793 is a deficient number, since it is larger than the sum of its proper divisors (3989947).

67828793 is a wasteful number, since it uses less digits than its factorization.

67828793 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3989946.

The product of its digits is 1016064, while the sum is 50.

The square root of 67828793 is about 8235.8237596491. The cubic root of 67828793 is about 407.8226693970.

The spelling of 67828793 in words is "sixty-seven million, eight hundred twenty-eight thousand, seven hundred ninety-three".