75013666 has 32 divisors (see below), whose sum is σ = 138918528. Its totient is φ = 29583360.

The previous prime is 75013661. The next prime is 75013703. The reversal of 75013666 is 66631057.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (75013661) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 116341 + ... + 116983.

It is an arithmetic number, because the mean of its divisors is an integer number (4341204).

Almost surely, 2^75013666 is an apocalyptic number.

75013666 is a deficient number, since it is larger than the sum of its proper divisors (63904862).

75013666 is a wasteful number, since it uses less digits than its factorization.

75013666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1306.

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

The square root of 75013666 is about 8661.0430087836. The cubic root of 75013666 is about 421.7419452082.

The spelling of 75013666 in words is "seventy-five million, thirteen thousand, six hundred sixty-six".