64670828 has 12 divisors (see below), whose sum is σ = 113596560. Its totient is φ = 32214672.

The previous prime is 64670819. The next prime is 64670831. The reversal of 64670828 is 82807646.

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, 28976 + ... + 31127.

It is an arithmetic number, because the mean of its divisors is an integer number (9466380).

Almost surely, 2^64670828 is an apocalyptic number.

It is an amenable number.

64670828 is a deficient number, since it is larger than the sum of its proper divisors (48925732).

64670828 is a wasteful number, since it uses less digits than its factorization.

64670828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60376 (or 60374 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 41.

The square root of 64670828 is about 8041.8174562719. The cubic root of 64670828 is about 401.3927036470.

The spelling of 64670828 in words is "sixty-four million, six hundred seventy thousand, eight hundred twenty-eight".