75612065 has 4 divisors (see below), whose sum is σ = 90734484. Its totient is φ = 60489648.

The previous prime is 75612041. The next prime is 75612071. The reversal of 75612065 is 56021657.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 38353249 + 37258816 = 6193^2 + 6104^2 .

It is a cyclic number.

It is not a de Polignac number, because 75612065 - 2¹⁶ = 75546529 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7561202 + ... + 7561211.

It is an arithmetic number, because the mean of its divisors is an integer number (22683621).

Almost surely, 2^75612065 is an apocalyptic number.

It is an amenable number.

75612065 is a deficient number, since it is larger than the sum of its proper divisors (15122419).

75612065 is a wasteful number, since it uses less digits than its factorization.

75612065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15122418.

The product of its (nonzero) digits is 12600, while the sum is 32.

The square root of 75612065 is about 8695.5198234493. The cubic root of 75612065 is about 422.8604162881.

It can be divided in two parts, 756 and 12065, that added together give a palindrome (12821).

The spelling of 75612065 in words is "seventy-five million, six hundred twelve thousand, sixty-five".