64709228 has 12 divisors (see below), whose sum is σ = 113811600. Its totient is φ = 32191632.

The previous prime is 64709219. The next prime is 64709243. The reversal of 64709228 is 82290746.

It is a junction number, because it is equal to n+sod(n) for n = 64709191 and 64709200.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39851 + ... + 41442.

It is an arithmetic number, because the mean of its divisors is an integer number (9484300).

Almost surely, 2^64709228 is an apocalyptic number.

It is an amenable number.

64709228 is a deficient number, since it is larger than the sum of its proper divisors (49102372).

64709228 is a wasteful number, since it uses less digits than its factorization.

64709228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81496 (or 81494 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 38.

The square root of 64709228 is about 8044.2046219623. The cubic root of 64709228 is about 401.4721337423.

The spelling of 64709228 in words is "sixty-four million, seven hundred nine thousand, two hundred twenty-eight".