354998673 has 16 divisors (see below), whose sum is σ = 526858560. Its totient is φ = 236245248.

The previous prime is 354998659. The next prime is 354998689. The reversal of 354998673 is 376899453.

354998673 is a `hidden beast` number, since 3 + 5 + 499 + 86 + 73 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-354998673 is a prime.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (354998173) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4186 + ... + 26972.

It is an arithmetic number, because the mean of its divisors is an integer number (32928660).

Almost surely, 2^354998673 is an apocalyptic number.

It is an amenable number.

354998673 is a deficient number, since it is larger than the sum of its proper divisors (171859887).

354998673 is a wasteful number, since it uses less digits than its factorization.

354998673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23373 (or 23367 counting only the distinct ones).

The product of its digits is 4898880, while the sum is 54.

The square root of 354998673 is about 18841.4084664603. The cubic root of 354998673 is about 708.0689928457.

The spelling of 354998673 in words is "three hundred fifty-four million, nine hundred ninety-eight thousand, six hundred seventy-three".