75533645 has 24 divisors (see below), whose sum is σ = 104889120. Its totient is φ = 52034400.

The previous prime is 75533641. The next prime is 75533657. The reversal of 75533645 is 54633557.

It is not a de Polignac number, because 75533645 - 2² = 75533641 is a prime.

It is a super-3 number, since 3×75533645³ (a number of 25 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 75533599 and 75533608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75533641) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8210 + ... + 14780.

It is an arithmetic number, because the mean of its divisors is an integer number (4370380).

Almost surely, 2^75533645 is an apocalyptic number.

It is an amenable number.

75533645 is a deficient number, since it is larger than the sum of its proper divisors (29355475).

75533645 is a wasteful number, since it uses less digits than its factorization.

75533645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6617 (or 6606 counting only the distinct ones).

The product of its digits is 189000, while the sum is 38.

The square root of 75533645 is about 8691.0094350426. The cubic root of 75533645 is about 422.7141777898.

The spelling of 75533645 in words is "seventy-five million, five hundred thirty-three thousand, six hundred forty-five".