64727285 has 24 divisors (see below), whose sum is σ = 90732600. Its totient is φ = 44198784.

The previous prime is 64727263. The next prime is 64727291. The reversal of 64727285 is 58272746.

It can be written as a sum of positive squares in 4 ways, for example, as 15038884 + 49688401 = 3878^2 + 7049^2 .

It is not a de Polignac number, because 64727285 - 2²² = 60532981 is a prime.

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 23 ways as a sum of consecutive naturals, for example, 85127 + ... + 85883.

It is an arithmetic number, because the mean of its divisors is an integer number (3780525).

Almost surely, 2^64727285 is an apocalyptic number.

It is an amenable number.

64727285 is a deficient number, since it is larger than the sum of its proper divisors (26005315).

64727285 is a wasteful number, since it uses less digits than its factorization.

64727285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1125 (or 1118 counting only the distinct ones).

The product of its digits is 188160, while the sum is 41.

The square root of 64727285 is about 8045.3269044831. The cubic root of 64727285 is about 401.5094736413.

The spelling of 64727285 in words is "sixty-four million, seven hundred twenty-seven thousand, two hundred eighty-five".