8221356590 has 16 divisors (see below), whose sum is σ = 14850738288. Its totient is φ = 3276921216.

The previous prime is 8221356571. The next prime is 8221356641. The reversal of 8221356590 is 956531228.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1449707 + ... + 1455366.

It is an arithmetic number, because the mean of its divisors is an integer number (928171143).

Almost surely, 2^8221356590 is an apocalyptic number.

8221356590 is a deficient number, since it is larger than the sum of its proper divisors (6629381698).

8221356590 is a wasteful number, since it uses less digits than its factorization.

8221356590 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2905363.

The product of its (nonzero) digits is 129600, while the sum is 41.

The square root of 8221356590 is about 90671.6967415963. The cubic root of 8221356590 is about 2018.2788160070.

The spelling of 8221356590 in words is "eight billion, two hundred twenty-one million, three hundred fifty-six thousand, five hundred ninety".