64705161 has 8 divisors (see below), whose sum is σ = 86845504. Its totient is φ = 42850800.

The previous prime is 64705159. The next prime is 64705163. The reversal of 64705161 is 16150746.

It is an interprime number because it is at equal distance from previous prime (64705159) and next prime (64705163).

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

It is not a de Polignac number, because 64705161 - 2¹ = 64705159 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64705163) 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, 70966 + ... + 71871.

It is an arithmetic number, because the mean of its divisors is an integer number (10855688).

Almost surely, 2^64705161 is an apocalyptic number.

It is an amenable number.

64705161 is a deficient number, since it is larger than the sum of its proper divisors (22140343).

64705161 is a wasteful number, since it uses less digits than its factorization.

64705161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142991.

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 64705161 is about 8043.9518273048. The cubic root of 64705161 is about 401.4637226732.

The spelling of 64705161 in words is "sixty-four million, seven hundred five thousand, one hundred sixty-one".