68072453 has 2 divisors, whose sum is σ = 68072454. Its totient is φ = 68072452.

The previous prime is 68072449. The next prime is 68072507. The reversal of 68072453 is 35427086.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38663524 + 29408929 = 6218^2 + 5423^2 .

It is a cyclic number.

It is not a de Polignac number, because 68072453 - 2² = 68072449 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68072413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34036226 + 34036227.

It is an arithmetic number, because the mean of its divisors is an integer number (34036227).

Almost surely, 2^68072453 is an apocalyptic number.

It is an amenable number.

68072453 is a deficient number, since it is larger than the sum of its proper divisors (1).

68072453 is an equidigital number, since it uses as much as digits as its factorization.

68072453 is an evil number, because the sum of its binary digits is even.

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

The square root of 68072453 is about 8250.6031900704. The cubic root of 68072453 is about 408.3104235191.

The spelling of 68072453 in words is "sixty-eight million, seventy-two thousand, four hundred fifty-three".