324435661 has 4 divisors (see below), whose sum is σ = 353929824. Its totient is φ = 294941500.

The previous prime is 324435619. The next prime is 324435691. The reversal of 324435661 is 166534423.

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 an emirpimes, since its reverse is a distinct semiprime: 166534423 = 11 ⋅15139493.

It is a cyclic number.

It is not a de Polignac number, because 324435661 - 2¹⁵ = 324402893 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (324435611) 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, 14747065 + ... + 14747086.

It is an arithmetic number, because the mean of its divisors is an integer number (88482456).

Almost surely, 2^324435661 is an apocalyptic number.

It is an amenable number.

324435661 is a deficient number, since it is larger than the sum of its proper divisors (29494163).

324435661 is a wasteful number, since it uses less digits than its factorization.

324435661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29494162.

The product of its digits is 51840, while the sum is 34.

The square root of 324435661 is about 18012.0976290936. The cubic root of 324435661 is about 687.1362517001.

The spelling of 324435661 in words is "three hundred twenty-four million, four hundred thirty-five thousand, six hundred sixty-one".