68269644 has 36 divisors (see below), whose sum is σ = 172823560. Its totient is φ = 22723200.

The previous prime is 68269639. The next prime is 68269651. The reversal of 68269644 is 44696286.

It is a tau number, because it is divible by the number of its divisors (36).

It is a self number, because there is not a number n which added to its sum of digits gives 68269644.

It is an unprimeable number.

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 in 11 ways as a sum of consecutive naturals, for example, 42447 + ... + 44025.

Almost surely, 2^68269644 is an apocalyptic number.

It is an amenable number.

68269644 is an abundant number, since it is smaller than the sum of its proper divisors (104553916).

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

68269644 is a wasteful number, since it uses less digits than its factorization.

68269644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2790 (or 2785 counting only the distinct ones).

The product of its digits is 497664, while the sum is 45.

The square root of 68269644 is about 8262.5446443575. The cubic root of 68269644 is about 408.7043054158.

The spelling of 68269644 in words is "sixty-eight million, two hundred sixty-nine thousand, six hundred forty-four".