76445513 has 4 divisors (see below), whose sum is σ = 76516548. Its totient is φ = 76374480.

The previous prime is 76445503. The next prime is 76445539. The reversal of 76445513 is 31554467.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 46063369 + 30382144 = 6787^2 + 5512^2 .

It is a cyclic number.

It is not a de Polignac number, because 76445513 - 2⁴ = 76445497 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (76445503) 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, 33878 + ... + 36063.

It is an arithmetic number, because the mean of its divisors is an integer number (19129137).

Almost surely, 2^76445513 is an apocalyptic number.

It is an amenable number.

76445513 is a deficient number, since it is larger than the sum of its proper divisors (71035).

76445513 is a wasteful number, since it uses less digits than its factorization.

76445513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71034.

The product of its digits is 50400, while the sum is 35.

The square root of 76445513 is about 8743.3124729704. The cubic root of 76445513 is about 424.4084281643.

The spelling of 76445513 in words is "seventy-six million, four hundred forty-five thousand, five hundred thirteen".