65728750 has 20 divisors (see below), whose sum is σ = 123204312. Its totient is φ = 26291000.

The previous prime is 65728739. The next prime is 65728753. The reversal of 65728750 is 5782756.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65728753) 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 9 ways as a sum of consecutive naturals, for example, 25042 + ... + 27541.

Almost surely, 2^65728750 is an apocalyptic number.

65728750 is a deficient number, since it is larger than the sum of its proper divisors (57475562).

65728750 is an equidigital number, since it uses as much as digits as its factorization.

65728750 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52605 (or 52590 counting only the distinct ones).

The product of its (nonzero) digits is 117600, while the sum is 40.

The square root of 65728750 is about 8107.3269330896. The cubic root of 65728750 is about 403.5696124088.

The spelling of 65728750 in words is "sixty-five million, seven hundred twenty-eight thousand, seven hundred fifty".