212744673 has 6 divisors (see below), whose sum is σ = 307297874. Its totient is φ = 141829776.

The previous prime is 212744671. The next prime is 212744689. The reversal of 212744673 is 376447212.

It can be written as a sum of positive squares in only one way, i.e., 196196049 + 16548624 = 14007^2 + 4068^2 .

It is not a de Polignac number, because 212744673 - 2¹ = 212744671 is a prime.

It is a super-3 number, since 3×212744673³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212744671) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11819140 + ... + 11819157.

Almost surely, 2^212744673 is an apocalyptic number.

It is an amenable number.

212744673 is a deficient number, since it is larger than the sum of its proper divisors (94553201).

212744673 is a wasteful number, since it uses less digits than its factorization.

212744673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23638303 (or 23638300 counting only the distinct ones).

The product of its digits is 56448, while the sum is 36.

The square root of 212744673 is about 14585.7695374636. The cubic root of 212744673 is about 596.9705380106.

The spelling of 212744673 in words is "two hundred twelve million, seven hundred forty-four thousand, six hundred seventy-three".