64878883 has 4 divisors (see below), whose sum is σ = 67699728. Its totient is φ = 62058040.

The previous prime is 64878841. The next prime is 64878889. The reversal of 64878883 is 38887846.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 38887846 = 2 ⋅19443923.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64878883 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 64878883.

It is not an unprimeable number, because it can be changed into a prime (64878889) 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 3 ways as a sum of consecutive naturals, for example, 1410388 + ... + 1410433.

It is an arithmetic number, because the mean of its divisors is an integer number (16924932).

Almost surely, 2^64878883 is an apocalyptic number.

64878883 is a deficient number, since it is larger than the sum of its proper divisors (2820845).

64878883 is a wasteful number, since it uses less digits than its factorization.

64878883 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2820844.

The product of its digits is 2064384, while the sum is 52.

The square root of 64878883 is about 8054.7428885098. The cubic root of 64878883 is about 401.8226881545.

The spelling of 64878883 in words is "sixty-four million, eight hundred seventy-eight thousand, eight hundred eighty-three".