63664465 has 16 divisors (see below), whose sum is σ = 77801472. Its totient is φ = 50004864.

The previous prime is 63664453. The next prime is 63664477. The reversal of 63664465 is 56446636.

It is an interprime number because it is at equal distance from previous prime (63664453) and next prime (63664477).

It is a cyclic number.

It is not a de Polignac number, because 63664465 - 2¹³ = 63656273 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67477 + ... + 68413.

It is an arithmetic number, because the mean of its divisors is an integer number (4862592).

Almost surely, 2^63664465 is an apocalyptic number.

It is an amenable number.

63664465 is a deficient number, since it is larger than the sum of its proper divisors (14137007).

63664465 is a wasteful number, since it uses less digits than its factorization.

63664465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1176.

The product of its digits is 311040, while the sum is 40.

The square root of 63664465 is about 7979.0015039477. The cubic root of 63664465 is about 399.2997435677.

The spelling of 63664465 in words is "sixty-three million, six hundred sixty-four thousand, four hundred sixty-five".