75828779 has 12 divisors (see below), whose sum is σ = 82780416. Its totient is φ = 69424992.

The previous prime is 75828773. The next prime is 75828787. The reversal of 75828779 is 97782857.

It is a de Polignac number, because none of the positive numbers 2^k-75828779 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 75828779.

It is not an unprimeable number, because it can be changed into a prime (75828773) 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 11 ways as a sum of consecutive naturals, for example, 19697 + ... + 23229.

It is an arithmetic number, because the mean of its divisors is an integer number (6898368).

Almost surely, 2^75828779 is an apocalyptic number.

75828779 is a deficient number, since it is larger than the sum of its proper divisors (6951637).

75828779 is a wasteful number, since it uses less digits than its factorization.

75828779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3686 (or 3673 counting only the distinct ones).

The product of its digits is 1975680, while the sum is 53.

The square root of 75828779 is about 8707.9721519996. The cubic root of 75828779 is about 423.2640218983.

It can be divided in two parts, 7582 and 8779, that added together give a palindrome (16361).

The spelling of 75828779 in words is "seventy-five million, eight hundred twenty-eight thousand, seven hundred seventy-nine".