7666069 has 2 divisors, whose sum is σ = 7666070. Its totient is φ = 7666068.

The previous prime is 7666039. The next prime is 7666091. The reversal of 7666069 is 9606667.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7535025 + 131044 = 2745^2 + 362^2 .

It is a cyclic number.

It is not a de Polignac number, because 7666069 - 2⁵ = 7666037 is a prime.

It is a super-2 number, since 2×7666069² = 117537227825522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7666039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3833034 + 3833035.

It is an arithmetic number, because the mean of its divisors is an integer number (3833035).

Almost surely, 2^7666069 is an apocalyptic number.

It is an amenable number.

7666069 is a deficient number, since it is larger than the sum of its proper divisors (1).

7666069 is an equidigital number, since it uses as much as digits as its factorization.

7666069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 81648, while the sum is 40.

The square root of 7666069 is about 2768.7666929519. The cubic root of 7666069 is about 197.1775992971.

It can be divided in two parts, 76660 and 69, that added together give a square (76729 = 277²).

The spelling of 7666069 in words is "seven million, six hundred sixty-six thousand, sixty-nine".