70022819 has 4 divisors (see below), whose sum is σ = 70059360. Its totient is φ = 69986280.

The previous prime is 70022807. The next prime is 70022863. The reversal of 70022819 is 91822007.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 70022819 - 2⁴ = 70022803 is a prime.

It is a super-4 number, since 4×70022819⁴ (a number of 32 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 70022791 and 70022800.

It is not an unprimeable number, because it can be changed into a prime (70022119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15227 + ... + 19284.

It is an arithmetic number, because the mean of its divisors is an integer number (17514840).

Almost surely, 2^70022819 is an apocalyptic number.

70022819 is a deficient number, since it is larger than the sum of its proper divisors (36541).

70022819 is a wasteful number, since it uses less digits than its factorization.

70022819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36540.

The product of its (nonzero) digits is 2016, while the sum is 29.

The square root of 70022819 is about 8367.9638503043. The cubic root of 70022819 is about 412.1733077866.

The spelling of 70022819 in words is "seventy million, twenty-two thousand, eight hundred nineteen".