427664065 has 24 divisors (see below), whose sum is σ = 559173888. Its totient is φ = 313627680.

The previous prime is 427664059. The next prime is 427664077. The reversal of 427664065 is 560466724.

It is not a de Polignac number, because 427664065 - 2¹¹ = 427662017 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 52134 + ... + 59776.

It is an arithmetic number, because the mean of its divisors is an integer number (23298912).

Almost surely, 2^427664065 is an apocalyptic number.

It is an amenable number.

427664065 is a deficient number, since it is larger than the sum of its proper divisors (131509823).

427664065 is a wasteful number, since it uses less digits than its factorization.

427664065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7717 (or 7698 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 40.

The square root of 427664065 is about 20680.0402562471. The cubic root of 427664065 is about 753.4149839493.

The spelling of 427664065 in words is "four hundred twenty-seven million, six hundred sixty-four thousand, sixty-five".