76530889 has 4 divisors (see below), whose sum is σ = 81032724. Its totient is φ = 72029056.

The previous prime is 76530871. The next prime is 76530893. The reversal of 76530889 is 98803567.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 98803567 = 3391 ⋅29137.

It can be written as a sum of positive squares in 2 ways, for example, as 65739664 + 10791225 = 8108^2 + 3285^2 .

It is a cyclic number.

It is not a de Polignac number, because 76530889 - 2²³ = 68142281 is a prime.

It is a super-2 number, since 2×76530889² = 11713953942260642, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (76530859) 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, 2250892 + ... + 2250925.

It is an arithmetic number, because the mean of its divisors is an integer number (20258181).

Almost surely, 2^76530889 is an apocalyptic number.

It is an amenable number.

76530889 is a deficient number, since it is larger than the sum of its proper divisors (4501835).

76530889 is a wasteful number, since it uses less digits than its factorization.

76530889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4501834.

The product of its (nonzero) digits is 362880, while the sum is 46.

The square root of 76530889 is about 8748.1934706544. The cubic root of 76530889 is about 424.5663655493.

It can be divided in two parts, 76 and 530889, that added together give a triangular number (530965 = T₁₀₃₀).

The spelling of 76530889 in words is "seventy-six million, five hundred thirty thousand, eight hundred eighty-nine".