216850597 has 2 divisors, whose sum is σ = 216850598. Its totient is φ = 216850596.

The previous prime is 216850583. The next prime is 216850607. The reversal of 216850597 is 795058612.

216850597 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 131583841 + 85266756 = 11471^2 + 9234^2 .

It is a cyclic number.

It is not a de Polignac number, because 216850597 - 2²³ = 208461989 is a prime.

It is equal to p_11958649 and since 216850597 and 11958649 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (216850567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108425298 + 108425299.

It is an arithmetic number, because the mean of its divisors is an integer number (108425299).

Almost surely, 2^216850597 is an apocalyptic number.

It is an amenable number.

216850597 is a deficient number, since it is larger than the sum of its proper divisors (1).

216850597 is an equidigital number, since it uses as much as digits as its factorization.

216850597 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 151200, while the sum is 43.

The square root of 216850597 is about 14725.8479212574. The cubic root of 216850597 is about 600.7865582411.

The spelling of 216850597 in words is "two hundred sixteen million, eight hundred fifty thousand, five hundred ninety-seven".