166046477 has 2 divisors, whose sum is σ = 166046478. Its totient is φ = 166046476.

The previous prime is 166046459. The next prime is 166046483. The reversal of 166046477 is 774640661.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 122301481 + 43744996 = 11059^2 + 6614^2 .

It is a cyclic number.

It is not a de Polignac number, because 166046477 - 2²⁴ = 149269261 is a prime.

It is a super-2 number, since 2×166046477² = 55142865048223058, 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 (166046077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83023238 + 83023239.

It is an arithmetic number, because the mean of its divisors is an integer number (83023239).

Almost surely, 2^166046477 is an apocalyptic number.

It is an amenable number.

166046477 is a deficient number, since it is larger than the sum of its proper divisors (1).

166046477 is an equidigital number, since it uses as much as digits as its factorization.

166046477 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 169344, while the sum is 41.

The square root of 166046477 is about 12885.9022578941. The cubic root of 166046477 is about 549.6377526494.

The spelling of 166046477 in words is "one hundred sixty-six million, forty-six thousand, four hundred seventy-seven".