64822069 has 4 divisors (see below), whose sum is σ = 69808396. Its totient is φ = 59835744.

The previous prime is 64822067. The next prime is 64822081. The reversal of 64822069 is 96022846.

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 43059844 + 21762225 = 6562^2 + 4665^2 .

It is a cyclic number.

It is not a de Polignac number, because 64822069 - 2¹ = 64822067 is a prime.

It is a super-2 number, since 2×64822069² = 8403801258881522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64822067) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2493144 + ... + 2493169.

It is an arithmetic number, because the mean of its divisors is an integer number (17452099).

Almost surely, 2^64822069 is an apocalyptic number.

It is an amenable number.

64822069 is a deficient number, since it is larger than the sum of its proper divisors (4986327).

64822069 is a wasteful number, since it uses less digits than its factorization.

64822069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4986326.

The product of its (nonzero) digits is 41472, while the sum is 37.

The square root of 64822069 is about 8051.2153740910. The cubic root of 64822069 is about 401.7053627620.

The spelling of 64822069 in words is "sixty-four million, eight hundred twenty-two thousand, sixty-nine".