64605161 has 8 divisors (see below), whose sum is σ = 65930304. Its totient is φ = 63288720.

The previous prime is 64605143. The next prime is 64605169. The reversal of 64605161 is 16150646.

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

It is not a de Polignac number, because 64605161 - 2⁶ = 64605097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64605169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14030 + ... + 18056.

It is an arithmetic number, because the mean of its divisors is an integer number (8241288).

Almost surely, 2^64605161 is an apocalyptic number.

64605161 is a gapful number since it is divisible by the number (61) formed by its first and last digit.

It is an amenable number.

64605161 is a deficient number, since it is larger than the sum of its proper divisors (1325143).

64605161 is a wasteful number, since it uses less digits than its factorization.

64605161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4351.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 64605161 is about 8037.7335735890. The cubic root of 64605161 is about 401.2567990877.

The spelling of 64605161 in words is "sixty-four million, six hundred five thousand, one hundred sixty-one".