67661128 has 32 divisors (see below), whose sum is σ = 134107200. Its totient is φ = 31914432.

The previous prime is 67661117. The next prime is 67661171. The reversal of 67661128 is 82116676.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41301 + ... + 42907.

It is an arithmetic number, because the mean of its divisors is an integer number (4190850).

Almost surely, 2^67661128 is an apocalyptic number.

It is an amenable number.

67661128 is a deficient number, since it is larger than the sum of its proper divisors (66446072).

67661128 is a wasteful number, since it uses less digits than its factorization.

67661128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1909 (or 1905 counting only the distinct ones).

The product of its digits is 24192, while the sum is 37.

The square root of 67661128 is about 8225.6384554635. The cubic root of 67661128 is about 407.4863618455.

The spelling of 67661128 in words is "sixty-seven million, six hundred sixty-one thousand, one hundred twenty-eight".