75066645 has 32 divisors (see below), whose sum is σ = 131569920. Its totient is φ = 36377600.

The previous prime is 75066637. The next prime is 75066659. The reversal of 75066645 is 54666057.

It is not a de Polignac number, because 75066645 - 2³ = 75066637 is a prime.

It is a super-3 number, since 3×75066645³ (a number of 25 digits) contains 333 as substring.

It is a congruent 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, 2320 + ... + 12470.

It is an arithmetic number, because the mean of its divisors is an integer number (4111560).

Almost surely, 2^75066645 is an apocalyptic number.

It is an amenable number.

75066645 is a deficient number, since it is larger than the sum of its proper divisors (56503275).

75066645 is a wasteful number, since it uses less digits than its factorization.

75066645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10205.

The product of its (nonzero) digits is 151200, while the sum is 39.

The square root of 75066645 is about 8664.1009343151. The cubic root of 75066645 is about 421.8412080478.

The spelling of 75066645 in words is "seventy-five million, sixty-six thousand, six hundred forty-five".