64786161 has 16 divisors (see below), whose sum is σ = 94656960. Its totient is φ = 39088320.

The previous prime is 64786159. The next prime is 64786171. The reversal of 64786161 is 16168746.

It is a happy number.

It is not a de Polignac number, because 64786161 - 2¹ = 64786159 is a prime.

It is not an unprimeable number, because it can be changed into a prime (64786171) 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, 3271 + ... + 11843.

It is an arithmetic number, because the mean of its divisors is an integer number (5916060).

Almost surely, 2^64786161 is an apocalyptic number.

It is an amenable number.

64786161 is a deficient number, since it is larger than the sum of its proper divisors (29870799).

64786161 is a wasteful number, since it uses less digits than its factorization.

64786161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8816.

The product of its digits is 48384, while the sum is 39.

The square root of 64786161 is about 8048.9850913019. The cubic root of 64786161 is about 401.6311745487.

The spelling of 64786161 in words is "sixty-four million, seven hundred eighty-six thousand, one hundred sixty-one".