212562643 has 2 divisors, whose sum is σ = 212562644. Its totient is φ = 212562642.

The previous prime is 212562589. The next prime is 212562653. The reversal of 212562643 is 346265212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 212562643 - 2²⁵ = 179008211 is a prime.

It is not a weakly prime, because it can be changed into another prime (212562653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106281321 + 106281322.

It is an arithmetic number, because the mean of its divisors is an integer number (106281322).

Almost surely, 2^212562643 is an apocalyptic number.

212562643 is a deficient number, since it is larger than the sum of its proper divisors (1).

212562643 is an equidigital number, since it uses as much as digits as its factorization.

212562643 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17280, while the sum is 31.

The square root of 212562643 is about 14579.5282159609. The cubic root of 212562643 is about 596.8002281380.

The spelling of 212562643 in words is "two hundred twelve million, five hundred sixty-two thousand, six hundred forty-three".