822605401 has 4 divisors (see below), whose sum is σ = 870993972. Its totient is φ = 774216832.

The previous prime is 822605393. The next prime is 822605453. The reversal of 822605401 is 104506228.

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 646379776 + 176225625 = 25424^2 + 13275^2 .

It is a cyclic number.

It is not a de Polignac number, because 822605401 - 2³ = 822605393 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 822605401.

It is not an unprimeable number, because it can be changed into a prime (822605471) 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, 24194260 + ... + 24194293.

It is an arithmetic number, because the mean of its divisors is an integer number (217748493).

Almost surely, 2^822605401 is an apocalyptic number.

It is an amenable number.

822605401 is a deficient number, since it is larger than the sum of its proper divisors (48388571).

822605401 is a wasteful number, since it uses less digits than its factorization.

822605401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48388570.

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 822605401 is about 28681.0983227630. The cubic root of 822605401 is about 936.9804271461.

The spelling of 822605401 in words is "eight hundred twenty-two million, six hundred five thousand, four hundred one".