108072709 has 2 divisors, whose sum is σ = 108072710. Its totient is φ = 108072708.

The previous prime is 108072707. The next prime is 108072733. The reversal of 108072709 is 907270801.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 66830625 + 41242084 = 8175^2 + 6422^2 .

It is a cyclic number.

It is not a de Polignac number, because 108072709 - 2¹ = 108072707 is a prime.

Together with 108072707, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (108072707) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54036354 + 54036355.

It is an arithmetic number, because the mean of its divisors is an integer number (54036355).

Almost surely, 2^108072709 is an apocalyptic number.

It is an amenable number.

108072709 is a deficient number, since it is larger than the sum of its proper divisors (1).

108072709 is an equidigital number, since it uses as much as digits as its factorization.

108072709 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7056, while the sum is 34.

The square root of 108072709 is about 10395.8024702281. The cubic root of 108072709 is about 476.3271604531.

The spelling of 108072709 in words is "one hundred eight million, seventy-two thousand, seven hundred nine".