64797814 has 4 divisors (see below), whose sum is σ = 97196724. Its totient is φ = 32398906.

The previous prime is 64797797. The next prime is 64797823. The reversal of 64797814 is 41879746.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 41879746 = 2 ⋅20939873.

It is a super-4 number, since 4×64797814⁴ (a number of 32 digits) contains 4444 as substring.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 16199452 + ... + 16199455.

It is an arithmetic number, because the mean of its divisors is an integer number (24299181).

Almost surely, 2^64797814 is an apocalyptic number.

64797814 is a deficient number, since it is larger than the sum of its proper divisors (32398910).

64797814 is a wasteful number, since it uses less digits than its factorization.

64797814 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32398909.

The product of its digits is 338688, while the sum is 46.

The square root of 64797814 is about 8049.7089388375. The cubic root of 64797814 is about 401.6552533923.

The spelling of 64797814 in words is "sixty-four million, seven hundred ninety-seven thousand, eight hundred fourteen".