427805761 has 4 divisors (see below), whose sum is σ = 428029012. Its totient is φ = 427582512.

The previous prime is 427805759. The next prime is 427805809. The reversal of 427805761 is 167508724.

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 186158736 + 241647025 = 13644^2 + 15545^2 .

It is a cyclic number.

It is not a de Polignac number, because 427805761 - 2¹ = 427805759 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (427806761) 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, 108726 + ... + 112591.

It is an arithmetic number, because the mean of its divisors is an integer number (107007253).

Almost surely, 2^427805761 is an apocalyptic number.

It is an amenable number.

427805761 is a deficient number, since it is larger than the sum of its proper divisors (223251).

427805761 is a wasteful number, since it uses less digits than its factorization.

427805761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223250.

The product of its (nonzero) digits is 94080, while the sum is 40.

The square root of 427805761 is about 20683.4658846142. The cubic root of 427805761 is about 753.4981832874.

The spelling of 427805761 in words is "four hundred twenty-seven million, eight hundred five thousand, seven hundred sixty-one".