609337921201 has 3 divisors (see below), whose sum is σ = 609338701803. Its totient is φ = 609337140600.

The previous prime is 609337921133. The next prime is 609337921217. The reversal of 609337921201 is 102129733906.

The square root of 609337921201 is 780601.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 568743730801 + 40594190400 = 754151^2 + 201480^2 .

It is not a de Polignac number, because 609337921201 - 2⁹ = 609337920689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (609337621201) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 390301 + ... + 1170901.

It is an arithmetic number, because the mean of its divisors is an integer number (203112900601).

Almost surely, 2^609337921201 is an apocalyptic number.

609337921201 is the 780601-st square number.

609337921201 is the 390301-st centered octagonal number.

It is an amenable number.

609337921201 is a deficient number, since it is larger than the sum of its proper divisors (780602).

609337921201 is an frugal number, since it uses more digits than its factorization.

609337921201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1561202 (or 780601 counting only the distinct ones).

The product of its (nonzero) digits is 122472, while the sum is 43.

The spelling of 609337921201 in words is "six hundred nine billion, three hundred thirty-seven million, nine hundred twenty-one thousand, two hundred one".