75838821 has 8 divisors (see below), whose sum is σ = 102046560. Its totient is φ = 50095152.

The previous prime is 75838811. The next prime is 75838837. The reversal of 75838821 is 12883857.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 75838821 - 2⁶ = 75838757 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75838801) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 115635 + ... + 116288.

It is an arithmetic number, because the mean of its divisors is an integer number (12755820).

Almost surely, 2^75838821 is an apocalyptic number.

It is an amenable number.

75838821 is a deficient number, since it is larger than the sum of its proper divisors (26207739).

75838821 is a wasteful number, since it uses less digits than its factorization.

75838821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232035.

The product of its digits is 107520, while the sum is 42.

The square root of 75838821 is about 8708.5487309884. The cubic root of 75838821 is about 423.2827053487.

The spelling of 75838821 in words is "seventy-five million, eight hundred thirty-eight thousand, eight hundred twenty-one".