223641487 has 2 divisors, whose sum is σ = 223641488. Its totient is φ = 223641486.

The previous prime is 223641479. The next prime is 223641527. The reversal of 223641487 is 784146322.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 223641487 - 2³ = 223641479 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (223641287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111820743 + 111820744.

It is an arithmetic number, because the mean of its divisors is an integer number (111820744).

Almost surely, 2^223641487 is an apocalyptic number.

223641487 is a deficient number, since it is larger than the sum of its proper divisors (1).

223641487 is an equidigital number, since it uses as much as digits as its factorization.

223641487 is an evil number, because the sum of its binary digits is even.

The product of its digits is 64512, while the sum is 37.

The square root of 223641487 is about 14954.6476722121. The cubic root of 223641487 is about 606.9936164171.

The spelling of 223641487 in words is "two hundred twenty-three million, six hundred forty-one thousand, four hundred eighty-seven".