75688891 has 4 divisors (see below), whose sum is σ = 75710032. Its totient is φ = 75667752.

The previous prime is 75688889. The next prime is 75688919. The reversal of 75688891 is 19888657.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 75688891 - 2¹ = 75688889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (75688831) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3720 + ... + 12853.

It is an arithmetic number, because the mean of its divisors is an integer number (18927508).

Almost surely, 2^75688891 is an apocalyptic number.

75688891 is a deficient number, since it is larger than the sum of its proper divisors (21141).

75688891 is a wasteful number, since it uses less digits than its factorization.

75688891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21140.

The product of its digits is 967680, while the sum is 52.

The square root of 75688891 is about 8699.9362641344. The cubic root of 75688891 is about 423.0035842591.

The spelling of 75688891 in words is "seventy-five million, six hundred eighty-eight thousand, eight hundred ninety-one".