67647472 has 10 divisors (see below), whose sum is σ = 131067008. Its totient is φ = 33823728.

The previous prime is 67647469. The next prime is 67647473. The reversal of 67647472 is 27474676.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67647473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2113968 + ... + 2113999.

Almost surely, 2^67647472 is an apocalyptic number.

It is an amenable number.

67647472 is a deficient number, since it is larger than the sum of its proper divisors (63419536).

67647472 is a wasteful number, since it uses less digits than its factorization.

67647472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4227975 (or 4227969 counting only the distinct ones).

The product of its digits is 395136, while the sum is 43.

The square root of 67647472 is about 8224.8083260341. The cubic root of 67647472 is about 407.4589457681.

The spelling of 67647472 in words is "sixty-seven million, six hundred forty-seven thousand, four hundred seventy-two".