32347661 has 4 divisors (see below), whose sum is σ = 32397852. Its totient is φ = 32297472.

The previous prime is 32347643. The next prime is 32347697. The reversal of 32347661 is 16674323.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 16674323 = 1279 ⋅13037.

It can be written as a sum of positive squares in 2 ways, for example, as 11095561 + 21252100 = 3331^2 + 4610^2 .

It is a cyclic number.

It is not a de Polignac number, because 32347661 - 2¹⁰ = 32346637 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 (32347061) 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, 24116 + ... + 25421.

It is an arithmetic number, because the mean of its divisors is an integer number (8099463).

Almost surely, 2^32347661 is an apocalyptic number.

It is an amenable number.

32347661 is a deficient number, since it is larger than the sum of its proper divisors (50191).

32347661 is an equidigital number, since it uses as much as digits as its factorization.

32347661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50190.

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

The square root of 32347661 is about 5687.5004175824. The cubic root of 32347661 is about 318.6258162409.

The spelling of 32347661 in words is "thirty-two million, three hundred forty-seven thousand, six hundred sixty-one".