63665323 has 4 divisors (see below), whose sum is σ = 67410360. Its totient is φ = 59920288.

The previous prime is 63665317. The next prime is 63665339. The reversal of 63665323 is 32356636.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-63665323 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63665363) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1872493 + ... + 1872526.

It is an arithmetic number, because the mean of its divisors is an integer number (16852590).

Almost surely, 2^63665323 is an apocalyptic number.

63665323 is a deficient number, since it is larger than the sum of its proper divisors (3745037).

63665323 is a wasteful number, since it uses less digits than its factorization.

63665323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3745036.

The product of its digits is 58320, while the sum is 34.

The square root of 63665323 is about 7979.0552698925. The cubic root of 63665323 is about 399.3015373346.

The spelling of 63665323 in words is "sixty-three million, six hundred sixty-five thousand, three hundred twenty-three".