329567961 has 4 divisors (see below), whose sum is σ = 439423952. Its totient is φ = 219711972.

The previous prime is 329567957. The next prime is 329567969. The reversal of 329567961 is 169765923.

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: 169765923 = 3 ⋅56588641.

It is not a de Polignac number, because 329567961 - 2² = 329567957 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 329567961.

It is not an unprimeable number, because it can be changed into a prime (329567969) 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, 54927991 + ... + 54927996.

It is an arithmetic number, because the mean of its divisors is an integer number (109855988).

Almost surely, 2^329567961 is an apocalyptic number.

It is an amenable number.

329567961 is a deficient number, since it is larger than the sum of its proper divisors (109855991).

329567961 is a wasteful number, since it uses less digits than its factorization.

329567961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109855990.

The product of its digits is 612360, while the sum is 48.

The square root of 329567961 is about 18154.0067478229. The cubic root of 329567961 is about 690.7406183341.

The spelling of 329567961 in words is "three hundred twenty-nine million, five hundred sixty-seven thousand, nine hundred sixty-one".