64822805 has 4 divisors (see below), whose sum is σ = 77787372. Its totient is φ = 51858240.

The previous prime is 64822799. The next prime is 64822811. The reversal of 64822805 is 50822846.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50822846 = 2 ⋅25411423.

It is an interprime number because it is at equal distance from previous prime (64822799) and next prime (64822811).

It can be written as a sum of positive squares in 2 ways, for example, as 28654609 + 36168196 = 5353^2 + 6014^2 .

It is not a de Polignac number, because 64822805 - 2¹⁰ = 64821781 is a prime.

It is a Duffinian number.

It is a congruent 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, 6482276 + ... + 6482285.

It is an arithmetic number, because the mean of its divisors is an integer number (19446843).

Almost surely, 2^64822805 is an apocalyptic number.

It is an amenable number.

64822805 is a deficient number, since it is larger than the sum of its proper divisors (12964567).

64822805 is a wasteful number, since it uses less digits than its factorization.

64822805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12964566.

The product of its (nonzero) digits is 30720, while the sum is 35.

The square root of 64822805 is about 8051.2610813462. The cubic root of 64822805 is about 401.7068830983.

The spelling of 64822805 in words is "sixty-four million, eight hundred twenty-two thousand, eight hundred five".