2064617878 has 8 divisors (see below), whose sum is σ = 3103982640. Its totient is φ = 1029957000.

The previous prime is 2064617869. The next prime is 2064617879. The reversal of 2064617878 is 8787164602.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2064617879) 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, 1174873 + ... + 1176628.

It is an arithmetic number, because the mean of its divisors is an integer number (387997830).

Almost surely, 2^2064617878 is an apocalyptic number.

2064617878 is a deficient number, since it is larger than the sum of its proper divisors (1039364762).

2064617878 is a wasteful number, since it uses less digits than its factorization.

2064617878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2351942.

The product of its (nonzero) digits is 903168, while the sum is 49.

The square root of 2064617878 is about 45438.0663981204. The cubic root of 2064617878 is about 1273.3463895088.

The spelling of 2064617878 in words is "two billion, sixty-four million, six hundred seventeen thousand, eight hundred seventy-eight".