75684869 has 8 divisors (see below), whose sum is σ = 83710200. Its totient is φ = 67974336.

The previous prime is 75684863. The next prime is 75684871. The reversal of 75684869 is 96848657.

It can be written as a sum of positive squares in 4 ways, for example, as 14250625 + 61434244 = 3775^2 + 7838^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 75684869 - 2⁸ = 75684613 is a prime.

It is a super-2 number, since 2×75684869² = 11456398791094322, which contains 22 as substring.

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 75684869.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75684863) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78194 + ... + 79155.

It is an arithmetic number, because the mean of its divisors is an integer number (10463775).

Almost surely, 2^75684869 is an apocalyptic number.

It is an amenable number.

75684869 is a deficient number, since it is larger than the sum of its proper divisors (8025331).

75684869 is a wasteful number, since it uses less digits than its factorization.

75684869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157399.

The product of its digits is 2903040, while the sum is 53.

The square root of 75684869 is about 8699.7051099448. The cubic root of 75684869 is about 422.9960915235.

The spelling of 75684869 in words is "seventy-five million, six hundred eighty-four thousand, eight hundred sixty-nine".