654636413 has 4 divisors (see below), whose sum is σ = 661385340. Its totient is φ = 647887488.

The previous prime is 654636403. The next prime is 654636457. The reversal of 654636413 is 314636456.

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 120934009 + 533702404 = 10997^2 + 23102^2 .

It is a cyclic number.

It is not a de Polignac number, because 654636413 - 2²² = 650442109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (654636403) 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, 3374318 + ... + 3374511.

It is an arithmetic number, because the mean of its divisors is an integer number (165346335).

Almost surely, 2^654636413 is an apocalyptic number.

It is an amenable number.

654636413 is a deficient number, since it is larger than the sum of its proper divisors (6748927).

654636413 is an equidigital number, since it uses as much as digits as its factorization.

654636413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6748926.

The product of its digits is 155520, while the sum is 38.

The square root of 654636413 is about 25585.8635382900. The cubic root of 654636413 is about 868.2938390343.

The spelling of 654636413 in words is "six hundred fifty-four million, six hundred thirty-six thousand, four hundred thirteen".