68871628 has 12 divisors (see below), whose sum is σ = 137743312. Its totient is φ = 29516400.

The previous prime is 68871619. The next prime is 68871629. The reversal of 68871628 is 82617886.

68871628 is an admirable number.

It is a super-2 number, since 2×68871628² = 9486602286740768, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (68871629) 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 in 3 ways as a sum of consecutive naturals, for example, 1229823 + ... + 1229878.

Almost surely, 2^68871628 is an apocalyptic number.

It is an amenable number.

68871628 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

68871628 is a wasteful number, since it uses less digits than its factorization.

68871628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2459712 (or 2459710 counting only the distinct ones).

The product of its digits is 258048, while the sum is 46.

The square root of 68871628 is about 8298.8931792137. The cubic root of 68871628 is about 409.9020745707.

It can be divided in two parts, 6887 and 1628, that added together give a triangular number (8515 = T₁₃₀).

The spelling of 68871628 in words is "sixty-eight million, eight hundred seventy-one thousand, six hundred twenty-eight".