68700109 has 2 divisors, whose sum is σ = 68700110. Its totient is φ = 68700108.

The previous prime is 68700089. The next prime is 68700119. The reversal of 68700109 is 90100786.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 48024900 + 20675209 = 6930^2 + 4547^2 .

It is a cyclic number.

It is not a de Polignac number, because 68700109 - 2¹⁵ = 68667341 is a prime.

It is a super-2 number, since 2×68700109² = 9439409953223762, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68700119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34350054 + 34350055.

It is an arithmetic number, because the mean of its divisors is an integer number (34350055).

Almost surely, 2^68700109 is an apocalyptic number.

It is an amenable number.

68700109 is a deficient number, since it is larger than the sum of its proper divisors (1).

68700109 is an equidigital number, since it uses as much as digits as its factorization.

68700109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3024, while the sum is 31.

The square root of 68700109 is about 8288.5528893770. The cubic root of 68700109 is about 409.5615161502.

The spelling of 68700109 in words is "sixty-eight million, seven hundred thousand, one hundred nine".