354665671 has 2 divisors, whose sum is σ = 354665672. Its totient is φ = 354665670.

The previous prime is 354665657. The next prime is 354665711. The reversal of 354665671 is 176566453.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 354665671 - 2¹⁹ = 354141383 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (354665071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 177332835 + 177332836.

It is an arithmetic number, because the mean of its divisors is an integer number (177332836).

Almost surely, 2^354665671 is an apocalyptic number.

354665671 is a deficient number, since it is larger than the sum of its proper divisors (1).

354665671 is an equidigital number, since it uses as much as digits as its factorization.

354665671 is an evil number, because the sum of its binary digits is even.

The product of its digits is 453600, while the sum is 43.

The square root of 354665671 is about 18832.5694210854. The cubic root of 354665671 is about 707.8475252053.

The spelling of 354665671 in words is "three hundred fifty-four million, six hundred sixty-five thousand, six hundred seventy-one".