64235663 has 4 divisors (see below), whose sum is σ = 65971800. Its totient is φ = 62499528.

The previous prime is 64235659. The next prime is 64235671. The reversal of 64235663 is 36653246.

64235663 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 64235663 - 2² = 64235659 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64235603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 868013 + ... + 868086.

It is an arithmetic number, because the mean of its divisors is an integer number (16492950).

Almost surely, 2^64235663 is an apocalyptic number.

64235663 is a deficient number, since it is larger than the sum of its proper divisors (1736137).

64235663 is a wasteful number, since it uses less digits than its factorization.

64235663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1736136.

The product of its digits is 77760, while the sum is 35.

The square root of 64235663 is about 8014.7154035561. The cubic root of 64235663 is about 400.4903631975.

The spelling of 64235663 in words is "sixty-four million, two hundred thirty-five thousand, six hundred sixty-three".