32720117 has 2 divisors, whose sum is σ = 32720118. Its totient is φ = 32720116.

The previous prime is 32720063. The next prime is 32720123. The reversal of 32720117 is 71102723.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30980356 + 1739761 = 5566^2 + 1319^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-32720117 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 32720092 and 32720101.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (32720197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16360058 + 16360059.

It is an arithmetic number, because the mean of its divisors is an integer number (16360059).

Almost surely, 2^32720117 is an apocalyptic number.

It is an amenable number.

32720117 is a deficient number, since it is larger than the sum of its proper divisors (1).

32720117 is an equidigital number, since it uses as much as digits as its factorization.

32720117 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 588, while the sum is 23.

The square root of 32720117 is about 5720.1500854436. The cubic root of 32720117 is about 319.8440548752.

The spelling of 32720117 in words is "thirty-two million, seven hundred twenty thousand, one hundred seventeen".