213764603 has 4 divisors (see below), whose sum is σ = 230208048. Its totient is φ = 197321160.

The previous prime is 213764569. The next prime is 213764609. The reversal of 213764603 is 306467312.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 213764603 - 2¹⁶ = 213699067 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 213764603.

It is not an unprimeable number, because it can be changed into a prime (213764609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8221703 + ... + 8221728.

It is an arithmetic number, because the mean of its divisors is an integer number (57552012).

Almost surely, 2^213764603 is an apocalyptic number.

213764603 is a deficient number, since it is larger than the sum of its proper divisors (16443445).

213764603 is a wasteful number, since it uses less digits than its factorization.

213764603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16443444.

The product of its (nonzero) digits is 18144, while the sum is 32.

The square root of 213764603 is about 14620.6909207465. The cubic root of 213764603 is about 597.9230064220.

The spelling of 213764603 in words is "two hundred thirteen million, seven hundred sixty-four thousand, six hundred three".