213466537 has 2 divisors, whose sum is σ = 213466538. Its totient is φ = 213466536.

The previous prime is 213466531. The next prime is 213466567. The reversal of 213466537 is 735664312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 210714256 + 2752281 = 14516^2 + 1659^2 .

It is a cyclic number.

It is not a de Polignac number, because 213466537 - 2¹⁵ = 213433769 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 213466496 and 213466505.

It is not a weakly prime, because it can be changed into another prime (213466531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106733268 + 106733269.

It is an arithmetic number, because the mean of its divisors is an integer number (106733269).

Almost surely, 2^213466537 is an apocalyptic number.

It is an amenable number.

213466537 is a deficient number, since it is larger than the sum of its proper divisors (1).

213466537 is an equidigital number, since it uses as much as digits as its factorization.

213466537 is an evil number, because the sum of its binary digits is even.

The product of its digits is 90720, while the sum is 37.

The square root of 213466537 is about 14610.4940710436. The cubic root of 213466537 is about 597.6449694046.

The spelling of 213466537 in words is "two hundred thirteen million, four hundred sixty-six thousand, five hundred thirty-seven".