606466661 has 2 divisors, whose sum is σ = 606466662. Its totient is φ = 606466660.

The previous prime is 606466639. The next prime is 606466753. The reversal of 606466661 is 166664606.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 407797636 + 198669025 = 20194^2 + 14095^2 .

It is a cyclic number.

It is not a de Polignac number, because 606466661 - 2²² = 602272357 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (606466561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 303233330 + 303233331.

It is an arithmetic number, because the mean of its divisors is an integer number (303233331).

Almost surely, 2^606466661 is an apocalyptic number.

It is an amenable number.

606466661 is a deficient number, since it is larger than the sum of its proper divisors (1).

606466661 is an equidigital number, since it uses as much as digits as its factorization.

606466661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 186624, while the sum is 41.

The square root of 606466661 is about 24626.5438297785. The cubic root of 606466661 is about 846.4519513772.

The spelling of 606466661 in words is "six hundred six million, four hundred sixty-six thousand, six hundred sixty-one".