75085638 has 16 divisors (see below), whose sum is σ = 150534720. Its totient is φ = 24967976.

The previous prime is 75085613. The next prime is 75085643. The reversal of 75085638 is 83658057.

It is a self number, because there is not a number n which added to its sum of digits gives 75085638.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12420 + ... + 17447.

It is an arithmetic number, because the mean of its divisors is an integer number (9408420).

Almost surely, 2^75085638 is an apocalyptic number.

75085638 is an abundant number, since it is smaller than the sum of its proper divisors (75449082).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

75085638 is a wasteful number, since it uses less digits than its factorization.

75085638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30291.

The product of its (nonzero) digits is 201600, while the sum is 42.

The square root of 75085638 is about 8665.1969394815. The cubic root of 75085638 is about 421.8767824561.

The spelling of 75085638 in words is "seventy-five million, eighty-five thousand, six hundred thirty-eight".