67628688 has 40 divisors (see below), whose sum is σ = 175146528. Its totient is φ = 22486272.

The previous prime is 67628681. The next prime is 67628699. The reversal of 67628688 is 88682676.

It is a self number, because there is not a number n which added to its sum of digits gives 67628688.

It is not an unprimeable number, because it can be changed into a prime (67628681) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20395 + ... + 23477.

Almost surely, 2^67628688 is an apocalyptic number.

It is an amenable number.

67628688 is an abundant number, since it is smaller than the sum of its proper divisors (107517840).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

67628688 is a wasteful number, since it uses less digits than its factorization.

67628688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3551 (or 3545 counting only the distinct ones).

The product of its digits is 1548288, while the sum is 51.

The square root of 67628688 is about 8223.6663356437. Note that the first 3 decimals coincide. The cubic root of 67628688 is about 407.4212285796.

The spelling of 67628688 in words is "sixty-seven million, six hundred twenty-eight thousand, six hundred eighty-eight".