427580867 has 4 divisors (see below), whose sum is σ = 488663856. Its totient is φ = 366497880.

The previous prime is 427580837. The next prime is 427580873. The reversal of 427580867 is 768085724.

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

It is not a de Polignac number, because 427580867 - 2²⁰ = 426532291 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (427580837) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30541484 + ... + 30541497.

It is an arithmetic number, because the mean of its divisors is an integer number (122165964).

Almost surely, 2^427580867 is an apocalyptic number.

427580867 is a deficient number, since it is larger than the sum of its proper divisors (61082989).

427580867 is an equidigital number, since it uses as much as digits as its factorization.

427580867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61082988.

The product of its (nonzero) digits is 752640, while the sum is 47.

The square root of 427580867 is about 20678.0286052612. The cubic root of 427580867 is about 753.3661241937.

The spelling of 427580867 in words is "four hundred twenty-seven million, five hundred eighty thousand, eight hundred sixty-seven".