64266305 has 4 divisors (see below), whose sum is σ = 77119572. Its totient is φ = 51413040.

The previous prime is 64266287. The next prime is 64266313. The reversal of 64266305 is 50366246.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 31730689 + 32535616 = 5633^2 + 5704^2 .

It is not a de Polignac number, because 64266305 - 2⁸ = 64266049 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, 6426626 + ... + 6426635.

It is an arithmetic number, because the mean of its divisors is an integer number (19279893).

Almost surely, 2^64266305 is an apocalyptic number.

It is an amenable number.

64266305 is a deficient number, since it is larger than the sum of its proper divisors (12853267).

64266305 is a wasteful number, since it uses less digits than its factorization.

64266305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12853266.

The product of its (nonzero) digits is 25920, while the sum is 32.

The square root of 64266305 is about 8016.6267843776. The cubic root of 64266305 is about 400.5540343439.

The spelling of 64266305 in words is "sixty-four million, two hundred sixty-six thousand, three hundred five".