75082739 has 4 divisors (see below), whose sum is σ = 75586800. Its totient is φ = 74578680.

The previous prime is 75082723. The next prime is 75082757. The reversal of 75082739 is 93728057.

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 75082739 - 2⁴ = 75082723 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 75082696 and 75082705.

It is not an unprimeable number, because it can be changed into a prime (75082759) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 251807 + ... + 252104.

It is an arithmetic number, because the mean of its divisors is an integer number (18896700).

Almost surely, 2^75082739 is an apocalyptic number.

75082739 is a deficient number, since it is larger than the sum of its proper divisors (504061).

75082739 is a wasteful number, since it uses less digits than its factorization.

75082739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 504060.

The product of its (nonzero) digits is 105840, while the sum is 41.

The square root of 75082739 is about 8665.0296594992. The cubic root of 75082739 is about 421.8713529378.

The spelling of 75082739 in words is "seventy-five million, eighty-two thousand, seven hundred thirty-nine".