75366813 has 4 divisors (see below), whose sum is σ = 100489088. Its totient is φ = 50244540.

The previous prime is 75366761. The next prime is 75366821. The reversal of 75366813 is 31866357.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 75366813 - 2¹⁰ = 75365789 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 (75366113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12561133 + ... + 12561138.

It is an arithmetic number, because the mean of its divisors is an integer number (25122272).

Almost surely, 2^75366813 is an apocalyptic number.

It is an amenable number.

75366813 is a deficient number, since it is larger than the sum of its proper divisors (25122275).

75366813 is a wasteful number, since it uses less digits than its factorization.

75366813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25122274.

The product of its digits is 90720, while the sum is 39.

The square root of 75366813 is about 8681.4061649021. The cubic root of 75366813 is about 422.4027305462.

The spelling of 75366813 in words is "seventy-five million, three hundred sixty-six thousand, eight hundred thirteen".