67673128 has 8 divisors (see below), whose sum is σ = 126887130. Its totient is φ = 33836560.

The previous prime is 67673119. The next prime is 67673129. The reversal of 67673128 is 82137676.

It can be written as a sum of positive squares in only one way, i.e., 49028004 + 18645124 = 7002^2 + 4318^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (67673129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4229563 + ... + 4229578.

Almost surely, 2^67673128 is an apocalyptic number.

It is an amenable number.

67673128 is a deficient number, since it is larger than the sum of its proper divisors (59214002).

67673128 is a wasteful number, since it uses less digits than its factorization.

67673128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8459147 (or 8459143 counting only the distinct ones).

The product of its digits is 84672, while the sum is 40.

The square root of 67673128 is about 8226.3678497864. The cubic root of 67673128 is about 407.5104502571.

The spelling of 67673128 in words is "sixty-seven million, six hundred seventy-three thousand, one hundred twenty-eight".