166090607 has 2 divisors, whose sum is σ = 166090608. Its totient is φ = 166090606.

The previous prime is 166090583. The next prime is 166090649. The reversal of 166090607 is 706090661.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (706090661) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 166090607 - 2⁶ = 166090543 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (166090657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83045303 + 83045304.

It is an arithmetic number, because the mean of its divisors is an integer number (83045304).

Almost surely, 2^166090607 is an apocalyptic number.

166090607 is a deficient number, since it is larger than the sum of its proper divisors (1).

166090607 is an equidigital number, since it uses as much as digits as its factorization.

166090607 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13608, while the sum is 35.

The square root of 166090607 is about 12887.6144805779. The cubic root of 166090607 is about 549.6864405549.

The spelling of 166090607 in words is "one hundred sixty-six million, ninety thousand, six hundred seven".