75681129 has 16 divisors (see below), whose sum is σ = 103400640. Its totient is φ = 49221120.

The previous prime is 75681113. The next prime is 75681163. The reversal of 75681129 is 92118657.

It is not a de Polignac number, because 75681129 - 2⁴ = 75681113 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (75681829) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22689 + ... + 25809.

It is an arithmetic number, because the mean of its divisors is an integer number (6462540).

Almost surely, 2^75681129 is an apocalyptic number.

It is an amenable number.

75681129 is a deficient number, since it is larger than the sum of its proper divisors (27719511).

75681129 is a wasteful number, since it uses less digits than its factorization.

75681129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3320.

The product of its digits is 30240, while the sum is 39.

The square root of 75681129 is about 8699.4901574747. The cubic root of 75681129 is about 422.9891238981.

The spelling of 75681129 in words is "seventy-five million, six hundred eighty-one thousand, one hundred twenty-nine".