64406985 has 8 divisors (see below), whose sum is σ = 103051200. Its totient is φ = 34350384.

The previous prime is 64406981. The next prime is 64406989. The reversal of 64406985 is 58960446.

It is an interprime number because it is at equal distance from previous prime (64406981) and next prime (64406989).

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

It is not a de Polignac number, because 64406985 - 2² = 64406981 is a prime.

It is not an unprimeable number, because it can be changed into a prime (64406981) 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, 2146885 + ... + 2146914.

It is an arithmetic number, because the mean of its divisors is an integer number (12881400).

Almost surely, 2^64406985 is an apocalyptic number.

It is an amenable number.

64406985 is a deficient number, since it is larger than the sum of its proper divisors (38644215).

64406985 is a wasteful number, since it uses less digits than its factorization.

64406985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4293807.

The product of its (nonzero) digits is 207360, while the sum is 42.

The square root of 64406985 is about 8025.3962518993. The cubic root of 64406985 is about 400.8460944652.

The spelling of 64406985 in words is "sixty-four million, four hundred six thousand, nine hundred eighty-five".