76540213 has 4 divisors (see below), whose sum is σ = 76928940. Its totient is φ = 76151488.

The previous prime is 76540207. The next prime is 76540223. The reversal of 76540213 is 31204567.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31204567 = 41 ⋅761087.

It can be written as a sum of positive squares in 2 ways, for example, as 75724804 + 815409 = 8702^2 + 903^2 .

It is a cyclic number.

It is not a de Polignac number, because 76540213 - 2⁵ = 76540181 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 (76540223) 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, 194068 + ... + 194461.

It is an arithmetic number, because the mean of its divisors is an integer number (19232235).

Almost surely, 2^76540213 is an apocalyptic number.

It is an amenable number.

76540213 is a deficient number, since it is larger than the sum of its proper divisors (388727).

76540213 is a wasteful number, since it uses less digits than its factorization.

76540213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 388726.

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 76540213 is about 8748.7263644487. The cubic root of 76540213 is about 424.5836069364.

The spelling of 76540213 in words is "seventy-six million, five hundred forty thousand, two hundred thirteen".