427509668 has 12 divisors (see below), whose sum is σ = 752019660. Its totient is φ = 212646912.

The previous prime is 427509629. The next prime is 427509679. The reversal of 427509668 is 866905724.

It can be written as a sum of positive squares in 2 ways, for example, as 96196864 + 331312804 = 9808^2 + 18202^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 276113 + ... + 277656.

It is an arithmetic number, because the mean of its divisors is an integer number (62668305).

Almost surely, 2^427509668 is an apocalyptic number.

It is an amenable number.

427509668 is a deficient number, since it is larger than the sum of its proper divisors (324509992).

427509668 is a wasteful number, since it uses less digits than its factorization.

427509668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 553966 (or 553964 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 47.

The square root of 427509668 is about 20676.3069236264. The cubic root of 427509668 is about 753.3243060674.

The spelling of 427509668 in words is "four hundred twenty-seven million, five hundred nine thousand, six hundred sixty-eight".