64635005 has 8 divisors (see below), whose sum is σ = 78496992. Its totient is φ = 51084688.

The previous prime is 64634987. The next prime is 64635061. The reversal of 64635005 is 50053646.

64635005 is nontrivially palindromic in base 15.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64635005 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77459 + ... + 78288.

It is an arithmetic number, because the mean of its divisors is an integer number (9812124).

Almost surely, 2^64635005 is an apocalyptic number.

It is an amenable number.

64635005 is a deficient number, since it is larger than the sum of its proper divisors (13861987).

64635005 is a wasteful number, since it uses less digits than its factorization.

64635005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155835.

The product of its (nonzero) digits is 10800, while the sum is 29.

The square root of 64635005 is about 8039.5898527226. The cubic root of 64635005 is about 401.3185757025.

The spelling of 64635005 in words is "sixty-four million, six hundred thirty-five thousand, five".