75916819 has 4 divisors (see below), whose sum is σ = 82818360. Its totient is φ = 69015280.

The previous prime is 75916817. The next prime is 75916823. The reversal of 75916819 is 91861957.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 91861957 = 11 ⋅8351087.

It is a cyclic number.

It is not a de Polignac number, because 75916819 - 2¹ = 75916817 is a prime.

It is a super-2 number, since 2×75916819² = 11526726814157522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (75916811) 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, 3450754 + ... + 3450775.

It is an arithmetic number, because the mean of its divisors is an integer number (20704590).

Almost surely, 2^75916819 is an apocalyptic number.

75916819 is a deficient number, since it is larger than the sum of its proper divisors (6901541).

75916819 is a wasteful number, since it uses less digits than its factorization.

75916819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6901540.

The product of its digits is 136080, while the sum is 46.

The square root of 75916819 is about 8713.0258234439. The cubic root of 75916819 is about 423.4277669064.

It can be divided in two parts, 759 and 16819, that added together give a triangular number (17578 = T₁₈₇).

The spelling of 75916819 in words is "seventy-five million, nine hundred sixteen thousand, eight hundred nineteen".