75536409 has 24 divisors (see below), whose sum is σ = 109624320. Its totient is φ = 46243392.

The previous prime is 75536407. The next prime is 75536413. The reversal of 75536409 is 90463557.

It is not a de Polignac number, because 75536409 - 2¹ = 75536407 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75536407) 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, 193987 + ... + 194375.

It is an arithmetic number, because the mean of its divisors is an integer number (4567680).

Almost surely, 2^75536409 is an apocalyptic number.

It is an amenable number.

75536409 is a deficient number, since it is larger than the sum of its proper divisors (34087911).

75536409 is a wasteful number, since it uses less digits than its factorization.

75536409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 801 (or 788 counting only the distinct ones).

The product of its (nonzero) digits is 113400, while the sum is 39.

The square root of 75536409 is about 8691.1684484884. The cubic root of 75536409 is about 422.7193338485.

The spelling of 75536409 in words is "seventy-five million, five hundred thirty-six thousand, four hundred nine".