7210896890 has 16 divisors (see below), whose sum is σ = 13012988040. Its totient is φ = 2876942400.

The previous prime is 7210896863. The next prime is 7210896899. The reversal of 7210896890 is 986980127.

It is a Cunningham number, because it is equal to 84917²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 2596004401 + 4614892489 = 50951^2 + 67933^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (7210896899) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 922961 + ... + 930740.

Almost surely, 2^7210896890 is an apocalyptic number.

7210896890 is a deficient number, since it is larger than the sum of its proper divisors (5802091150).

7210896890 is a wasteful number, since it uses less digits than its factorization.

7210896890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1854097.

The product of its (nonzero) digits is 435456, while the sum is 50.

The square root of 7210896890 is about 84917.0000058881. Note that the first 5 decimals coincide. The cubic root of 7210896890 is about 1931.9524292548.

The spelling of 7210896890 in words is "seven billion, two hundred ten million, eight hundred ninety-six thousand, eight hundred ninety".