212673644 has 6 divisors (see below), whose sum is σ = 372178884. Its totient is φ = 106336820.

The previous prime is 212673641. The next prime is 212673647. The reversal of 212673644 is 446376212.

It is an interprime number because it is at equal distance from previous prime (212673641) and next prime (212673647).

It is not an unprimeable number, because it can be changed into a prime (212673641) 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 as a sum of consecutive naturals, namely, 26584202 + ... + 26584209.

It is an arithmetic number, because the mean of its divisors is an integer number (62029814).

Almost surely, 2^212673644 is an apocalyptic number.

It is an amenable number.

212673644 is a deficient number, since it is larger than the sum of its proper divisors (159505240).

212673644 is a wasteful number, since it uses less digits than its factorization.

212673644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53168415 (or 53168413 counting only the distinct ones).

The product of its digits is 48384, while the sum is 35.

The square root of 212673644 is about 14583.3344609523. The cubic root of 212673644 is about 596.9040938241.

The spelling of 212673644 in words is "two hundred twelve million, six hundred seventy-three thousand, six hundred forty-four".