64641085 has 16 divisors (see below), whose sum is σ = 78796800. Its totient is φ = 50901760.

The previous prime is 64641077. The next prime is 64641119. The reversal of 64641085 is 58014646.

It is not a de Polignac number, because 64641085 - 2³ = 64641077 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 64641085.

It is a congruent 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, 107616 + ... + 108214.

It is an arithmetic number, because the mean of its divisors is an integer number (4924800).

Almost surely, 2^64641085 is an apocalyptic number.

It is an amenable number.

64641085 is a deficient number, since it is larger than the sum of its proper divisors (14155715).

64641085 is a wasteful number, since it uses less digits than its factorization.

64641085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 908.

The product of its (nonzero) digits is 23040, while the sum is 34.

The square root of 64641085 is about 8039.9679725730. The cubic root of 64641085 is about 401.3311588760.

The spelling of 64641085 in words is "sixty-four million, six hundred forty-one thousand, eighty-five".