423563866 has 16 divisors (see below), whose sum is σ = 710011008. Its totient is φ = 187832800.

The previous prime is 423563851. The next prime is 423563873. The reversal of 423563866 is 668365324.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 233890 + ... + 235693.

It is an arithmetic number, because the mean of its divisors is an integer number (44375688).

Almost surely, 2^423563866 is an apocalyptic number.

423563866 is a deficient number, since it is larger than the sum of its proper divisors (286447142).

423563866 is a wasteful number, since it uses less digits than its factorization.

423563866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 469637.

The product of its digits is 622080, while the sum is 43.

The square root of 423563866 is about 20580.6672875298. The cubic root of 423563866 is about 750.9994769509. Note that the first 3 decimals are identical.

The spelling of 423563866 in words is "four hundred twenty-three million, five hundred sixty-three thousand, eight hundred sixty-six".