64275305 has 4 divisors (see below), whose sum is σ = 77130372. Its totient is φ = 51420240.

The previous prime is 64275287. The next prime is 64275319. The reversal of 64275305 is 50357246.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50357246 = 2 ⋅25178623.

It can be written as a sum of positive squares in 2 ways, for example, as 15429184 + 48846121 = 3928^2 + 6989^2 .

It is not a de Polignac number, because 64275305 - 2¹⁰ = 64274281 is a prime.

It is a Duffinian number.

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, 6427526 + ... + 6427535.

It is an arithmetic number, because the mean of its divisors is an integer number (19282593).

Almost surely, 2^64275305 is an apocalyptic number.

It is an amenable number.

64275305 is a deficient number, since it is larger than the sum of its proper divisors (12855067).

64275305 is a wasteful number, since it uses less digits than its factorization.

64275305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12855066.

The product of its (nonzero) digits is 25200, while the sum is 32.

The square root of 64275305 is about 8017.1880980803. The cubic root of 64275305 is about 400.5727316381.

The spelling of 64275305 in words is "sixty-four million, two hundred seventy-five thousand, three hundred five".