64766705 has 16 divisors (see below), whose sum is σ = 79833600. Its totient is φ = 50417472.

The previous prime is 64766677. The next prime is 64766711. The reversal of 64766705 is 50766746.

It is a cyclic number.

It is not a de Polignac number, because 64766705 - 2¹² = 64762609 is a prime.

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, 45596 + ... + 46994.

It is an arithmetic number, because the mean of its divisors is an integer number (4989600).

Almost surely, 2^64766705 is an apocalyptic number.

It is an amenable number.

64766705 is a deficient number, since it is larger than the sum of its proper divisors (15066895).

64766705 is a wasteful number, since it uses less digits than its factorization.

64766705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1648.

The product of its (nonzero) digits is 211680, while the sum is 41.

The square root of 64766705 is about 8047.7764009694. The cubic root of 64766705 is about 401.5909657636.

Adding to 64766705 its sum of digits (41), we get a palindrome (64766746).

The spelling of 64766705 in words is "sixty-four million, seven hundred sixty-six thousand, seven hundred five".