64406705 has 8 divisors (see below), whose sum is σ = 84314304. Its totient is φ = 46841200.

The previous prime is 64406687. The next prime is 64406707. The reversal of 64406705 is 50760446.

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

It is not a de Polignac number, because 64406705 - 2²⁰ = 63358129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64406707) 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, 585461 + ... + 585570.

It is an arithmetic number, because the mean of its divisors is an integer number (10539288).

Almost surely, 2^64406705 is an apocalyptic number.

It is an amenable number.

64406705 is a deficient number, since it is larger than the sum of its proper divisors (19907599).

64406705 is a wasteful number, since it uses less digits than its factorization.

64406705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1171047.

The product of its (nonzero) digits is 20160, while the sum is 32.

The square root of 64406705 is about 8025.3788072589. The cubic root of 64406705 is about 400.8455135910.

The spelling of 64406705 in words is "sixty-four million, four hundred six thousand, seven hundred five".