401066671 has 2 divisors, whose sum is σ = 401066672. Its totient is φ = 401066670.

The previous prime is 401066641. The next prime is 401066681. The reversal of 401066671 is 176660104.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-401066671 is a prime.

It is a super-3 number, since 3×401066671³ (a number of 27 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (401066641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200533335 + 200533336.

It is an arithmetic number, because the mean of its divisors is an integer number (200533336).

Almost surely, 2^401066671 is an apocalyptic number.

401066671 is a deficient number, since it is larger than the sum of its proper divisors (1).

401066671 is an equidigital number, since it uses as much as digits as its factorization.

401066671 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 401066671 is about 20026.6490207423. The cubic root of 401066671 is about 737.4606600101.

The spelling of 401066671 in words is "four hundred one million, sixty-six thousand, six hundred seventy-one".