210540668 has 12 divisors (see below), whose sum is σ = 396788280. Its totient is φ = 97172592.

The previous prime is 210540593. The next prime is 210540679. The reversal of 210540668 is 866045012.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 2024378 + ... + 2024481.

It is an arithmetic number, because the mean of its divisors is an integer number (33065690).

Almost surely, 2^210540668 is an apocalyptic number.

It is an amenable number.

210540668 is a deficient number, since it is larger than the sum of its proper divisors (186247612).

210540668 is a wasteful number, since it uses less digits than its factorization.

210540668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4048876 (or 4048874 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 210540668 is about 14510.0195726953. The cubic root of 210540668 is about 594.9018673930.

The spelling of 210540668 in words is "two hundred ten million, five hundred forty thousand, six hundred sixty-eight".