424322666 has 4 divisors (see below), whose sum is σ = 636484002. Its totient is φ = 212161332.

The previous prime is 424322651. The next prime is 424322681. The reversal of 424322666 is 666223424.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (424322651) and next prime (424322681).

It can be written as a sum of positive squares in only one way, i.e., 358307041 + 66015625 = 18929^2 + 8125^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106080665 + ... + 106080668.

Almost surely, 2^424322666 is an apocalyptic number.

424322666 is a deficient number, since it is larger than the sum of its proper divisors (212161336).

424322666 is a wasteful number, since it uses less digits than its factorization.

424322666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212161335.

The product of its digits is 82944, while the sum is 35.

The square root of 424322666 is about 20599.0938150201. The cubic root of 424322666 is about 751.4476726016.

The spelling of 424322666 in words is "four hundred twenty-four million, three hundred twenty-two thousand, six hundred sixty-six".