80427813 has 4 divisors (see below), whose sum is σ = 107237088. Its totient is φ = 53618540.

The previous prime is 80427769. The next prime is 80427821. The reversal of 80427813 is 31872408.

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 a cyclic number.

It is not a de Polignac number, because 80427813 - 2⁹ = 80427301 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80427883) 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, 13404633 + ... + 13404638.

It is an arithmetic number, because the mean of its divisors is an integer number (26809272).

Almost surely, 2^80427813 is an apocalyptic number.

It is an amenable number.

80427813 is a deficient number, since it is larger than the sum of its proper divisors (26809275).

80427813 is a wasteful number, since it uses less digits than its factorization.

80427813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26809274.

The product of its (nonzero) digits is 10752, while the sum is 33.

The square root of 80427813 is about 8968.1554959757. The cubic root of 80427813 is about 431.6536522233.

The spelling of 80427813 in words is "eighty million, four hundred twenty-seven thousand, eight hundred thirteen".