68644744 has 32 divisors (see below), whose sum is σ = 147470400. Its totient is φ = 29344320.

The previous prime is 68644661. The next prime is 68644787. The reversal of 68644744 is 44744686.

It is a self number, because there is not a number n which added to its sum of digits gives 68644744.

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 7 ways as a sum of consecutive naturals, for example, 24487 + ... + 27145.

It is an arithmetic number, because the mean of its divisors is an integer number (4608450).

Almost surely, 2^68644744 is an apocalyptic number.

It is an amenable number.

68644744 is an abundant number, since it is smaller than the sum of its proper divisors (78825656).

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

68644744 is a wasteful number, since it uses less digits than its factorization.

68644744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3133 (or 3129 counting only the distinct ones).

The product of its digits is 516096, while the sum is 43.

The square root of 68644744 is about 8285.2123690344. The cubic root of 68644744 is about 409.4514655369.

The spelling of 68644744 in words is "sixty-eight million, six hundred forty-four thousand, seven hundred forty-four".