7219885664 has 24 divisors (see below), whose sum is σ = 14262680880. Its totient is φ = 3597617536.

The previous prime is 7219885657. The next prime is 7219885691. The reversal of 7219885664 is 4665889127.

It is a happy number.

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 in 3 ways as a sum of consecutive naturals, for example, 375644 + ... + 394395.

It is an arithmetic number, because the mean of its divisors is an integer number (594278370).

Almost surely, 2^7219885664 is an apocalyptic number.

It is an amenable number.

7219885664 is a deficient number, since it is larger than the sum of its proper divisors (7042795216).

7219885664 is a wasteful number, since it uses less digits than its factorization.

7219885664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 770342 (or 770334 counting only the distinct ones).

The product of its digits is 5806080, while the sum is 56.

The square root of 7219885664 is about 84969.9103447803. The cubic root of 7219885664 is about 1932.7548570796.

The spelling of 7219885664 in words is "seven billion, two hundred nineteen million, eight hundred eighty-five thousand, six hundred sixty-four".