427768706 has 4 divisors (see below), whose sum is σ = 641653062. Its totient is φ = 213884352.

The previous prime is 427768657. The next prime is 427768727. The reversal of 427768706 is 607867724.

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

It can be written as a sum of positive squares in only one way, i.e., 384748225 + 43020481 = 19615^2 + 6559^2 .

It is a Curzon number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 106942175 + ... + 106942178.

Almost surely, 2^427768706 is an apocalyptic number.

427768706 is a deficient number, since it is larger than the sum of its proper divisors (213884356).

427768706 is a wasteful number, since it uses less digits than its factorization.

427768706 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213884355.

The product of its (nonzero) digits is 790272, while the sum is 47.

The square root of 427768706 is about 20682.5701014163. The cubic root of 427768706 is about 753.4764275563.

The spelling of 427768706 in words is "four hundred twenty-seven million, seven hundred sixty-eight thousand, seven hundred six".