75272705 has 8 divisors (see below), whose sum is σ = 90427752. Its totient is φ = 60151168.

The previous prime is 75272693. The next prime is 75272711. The reversal of 75272705 is 50727257.

It can be written as a sum of positive squares in 4 ways, for example, as 11336689 + 63936016 = 3367^2 + 7996^2 .

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 75272705 - 2¹⁰ = 75271681 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3134 + ... + 12663.

It is an arithmetic number, because the mean of its divisors is an integer number (11303469).

Almost surely, 2^75272705 is an apocalyptic number.

It is an amenable number.

75272705 is a deficient number, since it is larger than the sum of its proper divisors (15155047).

75272705 is a wasteful number, since it uses less digits than its factorization.

75272705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16755.

The product of its (nonzero) digits is 34300, while the sum is 35.

The square root of 75272705 is about 8675.9843821897. The cubic root of 75272705 is about 422.2268439655.

The spelling of 75272705 in words is "seventy-five million, two hundred seventy-two thousand, seven hundred five".