75808213 has 4 divisors (see below), whose sum is σ = 81639628. Its totient is φ = 69976800.

The previous prime is 75808211. The next prime is 75808217. The reversal of 75808213 is 31280857.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31280857 = 1823 ⋅17159.

It can be written as a sum of positive squares in 2 ways, for example, as 35129329 + 40678884 = 5927^2 + 6378^2 .

It is a cyclic number.

It is not a de Polignac number, because 75808213 - 2¹ = 75808211 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 (75808211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2915688 + ... + 2915713.

It is an arithmetic number, because the mean of its divisors is an integer number (20409907).

Almost surely, 2^75808213 is an apocalyptic number.

It is an amenable number.

75808213 is a deficient number, since it is larger than the sum of its proper divisors (5831415).

75808213 is a wasteful number, since it uses less digits than its factorization.

75808213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5831414.

The product of its (nonzero) digits is 13440, while the sum is 34.

The square root of 75808213 is about 8706.7911999772. The cubic root of 75808213 is about 423.2257530726.

The spelling of 75808213 in words is "seventy-five million, eight hundred eight thousand, two hundred thirteen".