75688345 has 4 divisors (see below), whose sum is σ = 90826020. Its totient is φ = 60550672.

The previous prime is 75688339. The next prime is 75688351. The reversal of 75688345 is 54388657.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54388657 = 67 ⋅811771.

It is an interprime number because it is at equal distance from previous prime (75688339) and next prime (75688351).

It can be written as a sum of positive squares in 2 ways, for example, as 57820816 + 17867529 = 7604^2 + 4227^2 .

It is a cyclic number.

It is not a de Polignac number, because 75688345 - 2²⁵ = 42133913 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 75688295 and 75688304.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7568830 + ... + 7568839.

It is an arithmetic number, because the mean of its divisors is an integer number (22706505).

Almost surely, 2^75688345 is an apocalyptic number.

It is an amenable number.

75688345 is a deficient number, since it is larger than the sum of its proper divisors (15137675).

75688345 is a wasteful number, since it uses less digits than its factorization.

75688345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15137674.

The product of its digits is 806400, while the sum is 46.

The square root of 75688345 is about 8699.9048845375. The cubic root of 75688345 is about 423.0025671107.

The spelling of 75688345 in words is "seventy-five million, six hundred eighty-eight thousand, three hundred forty-five".