68981045 has 16 divisors (see below), whose sum is σ = 97655808. Its totient is φ = 45774720.

The previous prime is 68981041. The next prime is 68981047. The reversal of 68981045 is 54018986.

It is not a de Polignac number, because 68981045 - 2² = 68981041 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 68980993 and 68981011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68981041) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 30704 + ... + 32873.

It is an arithmetic number, because the mean of its divisors is an integer number (6103488).

Almost surely, 2^68981045 is an apocalyptic number.

It is an amenable number.

68981045 is a deficient number, since it is larger than the sum of its proper divisors (28674763).

68981045 is a wasteful number, since it uses less digits than its factorization.

68981045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63620.

The product of its (nonzero) digits is 69120, while the sum is 41.

The square root of 68981045 is about 8305.4828276266. The cubic root of 68981045 is about 410.1190314715.

The spelling of 68981045 in words is "sixty-eight million, nine hundred eighty-one thousand, forty-five".