212648673 has 16 divisors (see below), whose sum is σ = 292755456. Its totient is φ = 137208960.

The previous prime is 212648669. The next prime is 212648693. The reversal of 212648673 is 376846212.

It is a happy number.

It is not a de Polignac number, because 212648673 - 2² = 212648669 is a prime.

It is not an unprimeable number, because it can be changed into a prime (212648603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8815 + ... + 22427.

It is an arithmetic number, because the mean of its divisors is an integer number (18297216).

Almost surely, 2^212648673 is an apocalyptic number.

It is an amenable number.

212648673 is a deficient number, since it is larger than the sum of its proper divisors (80106783).

212648673 is a wasteful number, since it uses less digits than its factorization.

212648673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13784.

The product of its digits is 96768, while the sum is 39.

The square root of 212648673 is about 14582.4782873145. The cubic root of 212648673 is about 596.8807311493.

The spelling of 212648673 in words is "two hundred twelve million, six hundred forty-eight thousand, six hundred seventy-three".