420653668 has 12 divisors (see below), whose sum is σ = 736791552. Its totient is φ = 210141800.

The previous prime is 420653617. The next prime is 420653677. The reversal of 420653668 is 866356024.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 420653668.

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, 41080 + ... + 50287.

It is an arithmetic number, because the mean of its divisors is an integer number (61399296).

Almost surely, 2^420653668 is an apocalyptic number.

It is an amenable number.

420653668 is a deficient number, since it is larger than the sum of its proper divisors (316137884).

420653668 is a wasteful number, since it uses less digits than its factorization.

420653668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92522 (or 92520 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 40.

The square root of 420653668 is about 20509.8431978404. The cubic root of 420653668 is about 749.2755481550.

The spelling of 420653668 in words is "four hundred twenty million, six hundred fifty-three thousand, six hundred sixty-eight".