64677161 has 4 divisors (see below), whose sum is σ = 64694400. Its totient is φ = 64659924.

The previous prime is 64677149. The next prime is 64677181. The reversal of 64677161 is 16177646.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 64677161 - 2⁶ = 64677097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64677181) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 341 + ... + 11378.

It is an arithmetic number, because the mean of its divisors is an integer number (16173600).

Almost surely, 2^64677161 is an apocalyptic number.

It is an amenable number.

64677161 is a deficient number, since it is larger than the sum of its proper divisors (17239).

64677161 is a wasteful number, since it uses less digits than its factorization.

64677161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17238.

The product of its digits is 42336, while the sum is 38.

The square root of 64677161 is about 8042.2112009074. The cubic root of 64677161 is about 401.4058055720.

The spelling of 64677161 in words is "sixty-four million, six hundred seventy-seven thousand, one hundred sixty-one".