70822289 has 4 divisors (see below), whose sum is σ = 74988324. Its totient is φ = 66656256.

The previous prime is 70822277. The next prime is 70822303. The reversal of 70822289 is 98222807.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 98222807 = 2843 ⋅34549.

It can be written as a sum of positive squares in 2 ways, for example, as 59985025 + 10837264 = 7745^2 + 3292^2 .

It is a cyclic number.

It is not a de Polignac number, because 70822289 - 2²⁰ = 69773713 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (70822249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2082992 + ... + 2083025.

It is an arithmetic number, because the mean of its divisors is an integer number (18747081).

Almost surely, 2^70822289 is an apocalyptic number.

It is an amenable number.

70822289 is a deficient number, since it is larger than the sum of its proper divisors (4166035).

70822289 is a wasteful number, since it uses less digits than its factorization.

70822289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4166034.

The product of its (nonzero) digits is 32256, while the sum is 38.

The square root of 70822289 is about 8415.5979585529. The cubic root of 70822289 is about 413.7360079605.

The spelling of 70822289 in words is "seventy million, eight hundred twenty-two thousand, two hundred eighty-nine".