227820613 has 2 divisors, whose sum is σ = 227820614. Its totient is φ = 227820612.

The previous prime is 227820547. The next prime is 227820623. The reversal of 227820613 is 316028722.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 184497889 + 43322724 = 13583^2 + 6582^2 .

It is a cyclic number.

It is not a de Polignac number, because 227820613 - 2¹³ = 227812421 is a prime.

It is equal to p_12529327 and since 227820613 and 12529327 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (227820623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 113910306 + 113910307.

It is an arithmetic number, because the mean of its divisors is an integer number (113910307).

Almost surely, 2^227820613 is an apocalyptic number.

It is an amenable number.

227820613 is a deficient number, since it is larger than the sum of its proper divisors (1).

227820613 is an equidigital number, since it uses as much as digits as its factorization.

227820613 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 227820613 is about 15093.7276045383. The cubic root of 227820613 is about 610.7512137120.

The spelling of 227820613 in words is "two hundred twenty-seven million, eight hundred twenty thousand, six hundred thirteen".