2666429 has 2 divisors, whose sum is σ = 2666430. Its totient is φ = 2666428.

The previous prime is 2666423. The next prime is 2666453. The reversal of 2666429 is 9246662.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1452025 + 1214404 = 1205^2 + 1102^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2666429 is a prime.

It is a super-2 number, since 2×2666429² = 14219687224082, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2666423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1333214 + 1333215.

It is an arithmetic number, because the mean of its divisors is an integer number (1333215).

2^2666429 is an apocalyptic number.

It is an amenable number.

2666429 is a deficient number, since it is larger than the sum of its proper divisors (1).

2666429 is an equidigital number, since it uses as much as digits as its factorization.

2666429 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31104, while the sum is 35.

The square root of 2666429 is about 1632.9203899762. The cubic root of 2666429 is about 138.6681350262.

The spelling of 2666429 in words is "two million, six hundred sixty-six thousand, four hundred twenty-nine".