67628768 has 12 divisors (see below), whose sum is σ = 133144200. Its totient is φ = 33814368.

The previous prime is 67628767. The next prime is 67628777. The reversal of 67628768 is 86782676.

It is a happy number.

It is a super-2 number, since 2×67628768² = 9147300522395648, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67628767) by changing a digit.

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, 1056668 + ... + 1056731.

It is an arithmetic number, because the mean of its divisors is an integer number (11095350).

Almost surely, 2^67628768 is an apocalyptic number.

It is an amenable number.

67628768 is a deficient number, since it is larger than the sum of its proper divisors (65515432).

67628768 is a wasteful number, since it uses less digits than its factorization.

67628768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2113409 (or 2113401 counting only the distinct ones).

The product of its digits is 1354752, while the sum is 50.

The square root of 67628768 is about 8223.6711996529. The cubic root of 67628768 is about 407.4213892298.

The spelling of 67628768 in words is "sixty-seven million, six hundred twenty-eight thousand, seven hundred sixty-eight".