75443813 has 8 divisors (see below), whose sum is σ = 81352320. Its totient is φ = 69729120.

The previous prime is 75443803. The next prime is 75443843. The reversal of 75443813 is 31834457.

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

It is a cyclic number.

It is not a de Polignac number, because 75443813 - 2¹⁰ = 75442789 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75443803) 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, 47645 + ... + 49202.

It is an arithmetic number, because the mean of its divisors is an integer number (10169040).

Almost surely, 2^75443813 is an apocalyptic number.

It is an amenable number.

75443813 is a deficient number, since it is larger than the sum of its proper divisors (5908507).

75443813 is a wasteful number, since it uses less digits than its factorization.

75443813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96907.

The product of its digits is 40320, while the sum is 35.

The square root of 75443813 is about 8685.8397982003. The cubic root of 75443813 is about 422.5465336280.

The spelling of 75443813 in words is "seventy-five million, four hundred forty-three thousand, eight hundred thirteen".