427346581 has 12 divisors (see below), whose sum is σ = 444471300. Its totient is φ = 410859008.

The previous prime is 427346573. The next prime is 427346587. The reversal of 427346581 is 185643724.

It can be written as a sum of positive squares in 6 ways, for example, as 25704900 + 401641681 = 5070^2 + 20041^2 .

It is not a de Polignac number, because 427346581 - 2³ = 427346573 is a prime.

It is a super-2 number, since 2×427346581² = 365250200584779122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (427346587) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 225285 + ... + 227173.

It is an arithmetic number, because the mean of its divisors is an integer number (37039275).

Almost surely, 2^427346581 is an apocalyptic number.

It is an amenable number.

427346581 is a deficient number, since it is larger than the sum of its proper divisors (17124719).

427346581 is a wasteful number, since it uses less digits than its factorization.

427346581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2216 (or 2187 counting only the distinct ones).

The product of its digits is 161280, while the sum is 40.

The square root of 427346581 is about 20672.3627338531. The cubic root of 427346581 is about 753.2285008056.

The spelling of 427346581 in words is "four hundred twenty-seven million, three hundred forty-six thousand, five hundred eighty-one".