609744361 has 4 divisors (see below), whose sum is σ = 609800832. Its totient is φ = 609687892.

The previous prime is 609744341. The next prime is 609744397. The reversal of 609744361 is 163447906.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 163447906 = 2 ⋅81723953.

It is a cyclic number.

It is not a de Polignac number, because 609744361 - 2¹⁷ = 609613289 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (609744341) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6421 + ... + 35506.

It is an arithmetic number, because the mean of its divisors is an integer number (152450208).

Almost surely, 2^609744361 is an apocalyptic number.

It is an amenable number.

609744361 is a deficient number, since it is larger than the sum of its proper divisors (56471).

609744361 is a wasteful number, since it uses less digits than its factorization.

609744361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56470.

The product of its (nonzero) digits is 108864, while the sum is 40.

The square root of 609744361 is about 24693.0022678491. The cubic root of 609744361 is about 847.9741193189.

The spelling of 609744361 in words is "six hundred nine million, seven hundred forty-four thousand, three hundred sixty-one".