64945177 has 12 divisors (see below), whose sum is σ = 72460528. Its totient is φ = 58152600.

The previous prime is 64945171. The next prime is 64945183. The reversal of 64945177 is 77154946.

It is an interprime number because it is at equal distance from previous prime (64945171) and next prime (64945183).

It is a de Polignac number, because none of the positive numbers 2^k-64945177 is a prime.

It is a super-2 number, since 2×64945177² = 8435752031122658, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64945171) 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 11 ways as a sum of consecutive naturals, for example, 4102 + ... + 12112.

Almost surely, 2^64945177 is an apocalyptic number.

64945177 is a gapful number since it is divisible by the number (67) formed by its first and last digit.

It is an amenable number.

64945177 is a deficient number, since it is larger than the sum of its proper divisors (7515351).

64945177 is a wasteful number, since it uses less digits than its factorization.

64945177 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8100 (or 8089 counting only the distinct ones).

The product of its digits is 211680, while the sum is 43.

The square root of 64945177 is about 8058.8570529573. The cubic root of 64945177 is about 401.9595039362.

The spelling of 64945177 in words is "sixty-four million, nine hundred forty-five thousand, one hundred seventy-seven".