68742053 has 4 divisors (see below), whose sum is σ = 68758668. Its totient is φ = 68725440.

The previous prime is 68742031. The next prime is 68742071. The reversal of 68742053 is 35024786.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 58094884 + 10647169 = 7622^2 + 3263^2 .

It is a cyclic number.

It is not a de Polignac number, because 68742053 - 2²⁰ = 67693477 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68742083) by changing a digit.

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, 3383 + ... + 12203.

It is an arithmetic number, because the mean of its divisors is an integer number (17189667).

Almost surely, 2^68742053 is an apocalyptic number.

It is an amenable number.

68742053 is a deficient number, since it is larger than the sum of its proper divisors (16615).

68742053 is an equidigital number, since it uses as much as digits as its factorization.

68742053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16614.

The product of its (nonzero) digits is 40320, while the sum is 35.

The square root of 68742053 is about 8291.0827399080. The cubic root of 68742053 is about 409.6448500954.

The spelling of 68742053 in words is "sixty-eight million, seven hundred forty-two thousand, fifty-three".