173949668 has 6 divisors (see below), whose sum is σ = 304411926. Its totient is φ = 86974832.

The previous prime is 173949653. The next prime is 173949673. The reversal of 173949668 is 866949371.

It can be written as a sum of positive squares in only one way, i.e., 99161764 + 74787904 = 9958^2 + 8648^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 21743705 + ... + 21743712.

It is an arithmetic number, because the mean of its divisors is an integer number (50735321).

Almost surely, 2^173949668 is an apocalyptic number.

It is an amenable number.

173949668 is a deficient number, since it is larger than the sum of its proper divisors (130462258).

173949668 is a wasteful number, since it uses less digits than its factorization.

173949668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43487421 (or 43487419 counting only the distinct ones).

The product of its digits is 1959552, while the sum is 53.

The square root of 173949668 is about 13188.9979907497. The cubic root of 173949668 is about 558.2231820918.

Adding to 173949668 its sum of digits (53), we get a square (173949721 = 13189²).

The spelling of 173949668 in words is "one hundred seventy-three million, nine hundred forty-nine thousand, six hundred sixty-eight".