75140065 has 32 divisors (see below), whose sum is σ = 121072896. Its totient is φ = 43234560.

The previous prime is 75140027. The next prime is 75140071. The reversal of 75140065 is 56004157.

It is not a de Polignac number, because 75140065 - 2¹⁵ = 75107297 is a prime.

It is a Smith number, since the sum of its digits (28) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2502 + ... + 12511.

It is an arithmetic number, because the mean of its divisors is an integer number (3783528).

Almost surely, 2^75140065 is an apocalyptic number.

75140065 is the 5005-th octagonal number.

It is an amenable number.

75140065 is a deficient number, since it is larger than the sum of its proper divisors (45932831).

75140065 is a wasteful number, since it uses less digits than its factorization.

75140065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15049.

The product of its (nonzero) digits is 4200, while the sum is 28.

The square root of 75140065 is about 8668.3369223860. The cubic root of 75140065 is about 421.9786924995.

The spelling of 75140065 in words is "seventy-five million, one hundred forty thousand, sixty-five".