64728708 has 36 divisors (see below), whose sum is σ = 166015920. Its totient is φ = 19614320.

The previous prime is 64728691. The next prime is 64728731. The reversal of 64728708 is 80782746.

It is a self number, because there is not a number n which added to its sum of digits gives 64728708.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20838 + ... + 23741.

Almost surely, 2^64728708 is an apocalyptic number.

It is an amenable number.

64728708 is an abundant number, since it is smaller than the sum of its proper divisors (101287212).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64728708 is a wasteful number, since it uses less digits than its factorization.

64728708 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44608 (or 44595 counting only the distinct ones).

The product of its (nonzero) digits is 150528, while the sum is 42.

The square root of 64728708 is about 8045.4153404284. The cubic root of 64728708 is about 401.5124159543.

The spelling of 64728708 in words is "sixty-four million, seven hundred twenty-eight thousand, seven hundred eight".