64876819 has 8 divisors (see below), whose sum is σ = 74216288. Its totient is φ = 55555200.

The previous prime is 64876793. The next prime is 64876829. The reversal of 64876819 is 91867846.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 64876819 - 2⁵ = 64876787 is a prime.

It is a super-2 number, since 2×64876819² = 8418003287117522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64876829) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4549 + ... + 12265.

It is an arithmetic number, because the mean of its divisors is an integer number (9277036).

Almost surely, 2^64876819 is an apocalyptic number.

64876819 is a deficient number, since it is larger than the sum of its proper divisors (9339469).

64876819 is a wasteful number, since it uses less digits than its factorization.

64876819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8925.

The product of its digits is 580608, while the sum is 49.

The square root of 64876819 is about 8054.6147642206. The cubic root of 64876819 is about 401.8184270309.

The spelling of 64876819 in words is "sixty-four million, eight hundred seventy-six thousand, eight hundred nineteen".