10694209 has 2 divisors, whose sum is σ = 10694210. Its totient is φ = 10694208.

The previous prime is 10694161. The next prime is 10694213. The reversal of 10694209 is 90249601.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7683984 + 3010225 = 2772^2 + 1735^2 .

It is a cyclic number.

It is not a de Polignac number, because 10694209 - 2⁷ = 10694081 is a prime.

It is a super-2 number, since 2×10694209² = 228732212271362, which contains 22 as substring.

It is equal to p₇₀₇₆₅₆ and since 10694209 and 707656 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (10694219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5347104 + 5347105.

It is an arithmetic number, because the mean of its divisors is an integer number (5347105).

Almost surely, 2^10694209 is an apocalyptic number.

It is an amenable number.

10694209 is a deficient number, since it is larger than the sum of its proper divisors (1).

10694209 is an equidigital number, since it uses as much as digits as its factorization.

10694209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 10694209 is about 3270.2001467800. The cubic root of 10694209 is about 220.3177845487.

The spelling of 10694209 in words is "ten million, six hundred ninety-four thousand, two hundred nine".