64885105 has 8 divisors (see below), whose sum is σ = 77905512. Its totient is φ = 51879168.

The previous prime is 64885103. The next prime is 64885109. The reversal of 64885105 is 50158846.

It can be written as a sum of positive squares in 4 ways, for example, as 29637136 + 35247969 = 5444^2 + 5937^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 64885105 - 2¹ = 64885103 is a prime.

It is a super-2 number, since 2×64885105² = 8420153701722050, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64885103) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14607 + ... + 18523.

It is an arithmetic number, because the mean of its divisors is an integer number (9738189).

Almost surely, 2^64885105 is an apocalyptic number.

It is an amenable number.

64885105 is a deficient number, since it is larger than the sum of its proper divisors (13020407).

64885105 is a wasteful number, since it uses less digits than its factorization.

64885105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7235.

The product of its (nonzero) digits is 38400, while the sum is 37.

The square root of 64885105 is about 8055.1291113178. The cubic root of 64885105 is about 401.8355329135.

The spelling of 64885105 in words is "sixty-four million, eight hundred eighty-five thousand, one hundred five".