213772633 has 2 divisors, whose sum is σ = 213772634. Its totient is φ = 213772632.

The previous prime is 213772631. The next prime is 213772639. The reversal of 213772633 is 336277312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 112105744 + 101666889 = 10588^2 + 10083^2 .

It is a cyclic number.

It is not a de Polignac number, because 213772633 - 2¹ = 213772631 is a prime.

Together with 213772631, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (213772631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106886316 + 106886317.

It is an arithmetic number, because the mean of its divisors is an integer number (106886317).

Almost surely, 2^213772633 is an apocalyptic number.

It is an amenable number.

213772633 is a deficient number, since it is larger than the sum of its proper divisors (1).

213772633 is an equidigital number, since it uses as much as digits as its factorization.

213772633 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31752, while the sum is 34.

The square root of 213772633 is about 14620.9655289929. The cubic root of 213772633 is about 597.9304932581.

The spelling of 213772633 in words is "two hundred thirteen million, seven hundred seventy-two thousand, six hundred thirty-three".