166277743 has 2 divisors, whose sum is σ = 166277744. Its totient is φ = 166277742.

The previous prime is 166277693. The next prime is 166277747. The reversal of 166277743 is 347772661.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-166277743 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 166277743.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (166277747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83138871 + 83138872.

It is an arithmetic number, because the mean of its divisors is an integer number (83138872).

Almost surely, 2^166277743 is an apocalyptic number.

166277743 is a deficient number, since it is larger than the sum of its proper divisors (1).

166277743 is an equidigital number, since it uses as much as digits as its factorization.

166277743 is an evil number, because the sum of its binary digits is even.

The product of its digits is 296352, while the sum is 43.

The square root of 166277743 is about 12894.8727407447. The cubic root of 166277743 is about 549.8928088626.

The spelling of 166277743 in words is "one hundred sixty-six million, two hundred seventy-seven thousand, seven hundred forty-three".