6610069 has 2 divisors, whose sum is σ = 6610070. Its totient is φ = 6610068.

The previous prime is 6610067. The next prime is 6610091. The reversal of 6610069 is 9600166.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6563844 + 46225 = 2562^2 + 215^2 .

It is a cyclic number.

It is not a de Polignac number, because 6610069 - 2¹ = 6610067 is a prime.

It is a super-2 number, since 2×6610069² = 87386024369522, which contains 22 as substring.

Together with 6610067, it forms a pair of twin primes.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6610063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3305034 + 3305035.

It is an arithmetic number, because the mean of its divisors is an integer number (3305035).

Almost surely, 2^6610069 is an apocalyptic number.

It is an amenable number.

6610069 is a deficient number, since it is larger than the sum of its proper divisors (1).

6610069 is an equidigital number, since it uses as much as digits as its factorization.

6610069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 6610069 is about 2571.0054453462. The cubic root of 6610069 is about 187.6730869838.

Subtracting from 6610069 its sum of digits (28), we obtain a square (6610041 = 2571²).

The spelling of 6610069 in words is "six million, six hundred ten thousand, sixty-nine".