672660171 has 24 divisors (see below), whose sum is σ = 981227520. Its totient is φ = 444030000.

The previous prime is 672660127. The next prime is 672660181. The reversal of 672660171 is 171066276.

It is not a de Polignac number, because 672660171 - 2¹⁹ = 672135883 is a prime.

It is not an unprimeable number, because it can be changed into a prime (672660181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 430690 + ... + 432248.

It is an arithmetic number, because the mean of its divisors is an integer number (40884480).

Almost surely, 2^672660171 is an apocalyptic number.

672660171 is a deficient number, since it is larger than the sum of its proper divisors (308567349).

672660171 is a wasteful number, since it uses less digits than its factorization.

672660171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2007 (or 2004 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 36.

The square root of 672660171 is about 25935.6929924766. The cubic root of 672660171 is about 876.1905626271.

The spelling of 672660171 in words is "six hundred seventy-two million, six hundred sixty thousand, one hundred seventy-one".