64705705 has 8 divisors (see below), whose sum is σ = 77706432. Its totient is φ = 51724848.

The previous prime is 64705703. The next prime is 64705717. The reversal of 64705705 is 50750746.

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 64705705 - 2¹ = 64705703 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64705703) 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, 3522 + ... + 11908.

It is an arithmetic number, because the mean of its divisors is an integer number (9713304).

Almost surely, 2^64705705 is an apocalyptic number.

It is an amenable number.

64705705 is a deficient number, since it is larger than the sum of its proper divisors (13000727).

64705705 is a wasteful number, since it uses less digits than its factorization.

64705705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9935.

The product of its (nonzero) digits is 29400, while the sum is 34.

The square root of 64705705 is about 8043.9856414591. The cubic root of 64705705 is about 401.4648477542.

The spelling of 64705705 in words is "sixty-four million, seven hundred five thousand, seven hundred five".