32661971 has 4 divisors (see below), whose sum is σ = 32688600. Its totient is φ = 32635344.

The previous prime is 32661949. The next prime is 32661973. The reversal of 32661971 is 17916623.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 32661971 - 2⁶ = 32661907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (32661973) 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, 11381 + ... + 13958.

It is an arithmetic number, because the mean of its divisors is an integer number (8172150).

Almost surely, 2^32661971 is an apocalyptic number.

32661971 is a deficient number, since it is larger than the sum of its proper divisors (26629).

32661971 is a wasteful number, since it uses less digits than its factorization.

32661971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26628.

The product of its digits is 13608, while the sum is 35.

The square root of 32661971 is about 5715.0652664690. The cubic root of 32661971 is about 319.6544805759.

It can be divided in two parts, 326 and 61971, that multiplied together give a triangular number (20202546 = T₆₃₅₆).

The spelling of 32661971 in words is "thirty-two million, six hundred sixty-one thousand, nine hundred seventy-one".