68442453 has 6 divisors (see below), whose sum is σ = 98861334. Its totient is φ = 45628296.

The previous prime is 68442431. The next prime is 68442487. The reversal of 68442453 is 35424486.

It can be written as a sum of positive squares in only one way, i.e., 63393444 + 5049009 = 7962^2 + 2247^2 .

It is a de Polignac number, because none of the positive numbers 2^k-68442453 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68442053) 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 5 ways as a sum of consecutive naturals, for example, 3802350 + ... + 3802367.

It is an arithmetic number, because the mean of its divisors is an integer number (16476889).

Almost surely, 2^68442453 is an apocalyptic number.

It is an amenable number.

68442453 is a deficient number, since it is larger than the sum of its proper divisors (30418881).

68442453 is a wasteful number, since it uses less digits than its factorization.

68442453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7604723 (or 7604720 counting only the distinct ones).

The product of its digits is 92160, while the sum is 36.

The square root of 68442453 is about 8272.9954067436. The cubic root of 68442453 is about 409.0488620354.

The spelling of 68442453 in words is "sixty-eight million, four hundred forty-two thousand, four hundred fifty-three".