68921044 has 12 divisors (see below), whose sum is σ = 120670144. Its totient is φ = 34443864.

The previous prime is 68921011. The next prime is 68921053. The reversal of 68921044 is 44012986.

It is a super-2 number, since 2×68921044² = 9500220612099872, which contains 22 as substring.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

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, 13039 + ... + 17545.

Almost surely, 2^68921044 is an apocalyptic number.

It is an amenable number.

68921044 is a deficient number, since it is larger than the sum of its proper divisors (51749100).

68921044 is a wasteful number, since it uses less digits than its factorization.

68921044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8334 (or 8332 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 34.

The square root of 68921044 is about 8301.8699098456. The cubic root of 68921044 is about 410.0000872496. Note that the first 4 decimals are identical.

The spelling of 68921044 in words is "sixty-eight million, nine hundred twenty-one thousand, forty-four".