664468465 has 8 divisors (see below), whose sum is σ = 815905728. Its totient is φ = 519212400.

The previous prime is 664468463. The next prime is 664468471. The reversal of 664468465 is 564864466.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 664468465 - 2¹ = 664468463 is a prime.

It is a super-3 number, since 3×664468465³ (a number of 27 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (664468463) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1545061 + ... + 1545490.

It is an arithmetic number, because the mean of its divisors is an integer number (101988216).

Almost surely, 2^664468465 is an apocalyptic number.

It is an amenable number.

664468465 is a deficient number, since it is larger than the sum of its proper divisors (151437263).

664468465 is a wasteful number, since it uses less digits than its factorization.

664468465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3090599.

The product of its digits is 3317760, while the sum is 49.

The square root of 664468465 is about 25777.2858346258. The cubic root of 664468465 is about 872.6192544771.

The spelling of 664468465 in words is "six hundred sixty-four million, four hundred sixty-eight thousand, four hundred sixty-five".