75066613 has 8 divisors (see below), whose sum is σ = 77013720. Its totient is φ = 73125120.

The previous prime is 75066583. The next prime is 75066617. The reversal of 75066613 is 31666057.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 19044 + 75047569 = 138^2 + 8663^2 .

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 75066613 - 2¹³ = 75058421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75066617) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44143 + ... + 45811.

It is an arithmetic number, because the mean of its divisors is an integer number (9626715).

Almost surely, 2^75066613 is an apocalyptic number.

It is an amenable number.

75066613 is a deficient number, since it is larger than the sum of its proper divisors (1947107).

75066613 is a wasteful number, since it uses less digits than its factorization.

75066613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2807.

The product of its (nonzero) digits is 22680, while the sum is 34.

The square root of 75066613 is about 8664.0990876144. The cubic root of 75066613 is about 421.8411481059.

The spelling of 75066613 in words is "seventy-five million, sixty-six thousand, six hundred thirteen".