64858161 has 16 divisors (see below), whose sum is σ = 87739520. Its totient is φ = 42612480.

The previous prime is 64858139. The next prime is 64858207. The reversal of 64858161 is 16185846.

It is not a de Polignac number, because 64858161 - 2⁶ = 64858097 is a prime.

It is a super-3 number, since 3×64858161³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64858561) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 78396 + ... + 79218.

It is an arithmetic number, because the mean of its divisors is an integer number (5483720).

Almost surely, 2^64858161 is an apocalyptic number.

It is an amenable number.

64858161 is a deficient number, since it is larger than the sum of its proper divisors (22881359).

64858161 is a wasteful number, since it uses less digits than its factorization.

64858161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1176.

The product of its digits is 46080, while the sum is 39.

The square root of 64858161 is about 8053.4564629108. The cubic root of 64858161 is about 401.7799035277.

The spelling of 64858161 in words is "sixty-four million, eight hundred fifty-eight thousand, one hundred sixty-one".