64102005 has 24 divisors (see below), whose sum is σ = 121212000. Its totient is φ = 31079520.

The previous prime is 64101971. The next prime is 64102013. The reversal of 64102005 is 50020146.

It is a happy number.

64102005 is a `hidden beast` number, since 641 + 0 + 20 + 0 + 5 = 666.

It is not a de Polignac number, because 64102005 - 2⁶ = 64101941 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 64255 + ... + 65244.

It is an arithmetic number, because the mean of its divisors is an integer number (5050500).

Almost surely, 2^64102005 is an apocalyptic number.

It is an amenable number.

64102005 is a deficient number, since it is larger than the sum of its proper divisors (57109995).

64102005 is a wasteful number, since it uses less digits than its factorization.

64102005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129521 (or 129518 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 64102005 is about 8006.3727742343. The cubic root of 64102005 is about 400.2123976148.

The spelling of 64102005 in words is "sixty-four million, one hundred two thousand, five".