68211453 has 4 divisors (see below), whose sum is σ = 90948608. Its totient is φ = 45474300.

The previous prime is 68211443. The next prime is 68211499. The reversal of 68211453 is 35411286.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 68211453 - 2¹⁸ = 67949309 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 68211453.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68211443) 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, 11368573 + ... + 11368578.

It is an arithmetic number, because the mean of its divisors is an integer number (22737152).

Almost surely, 2^68211453 is an apocalyptic number.

It is an amenable number.

68211453 is a deficient number, since it is larger than the sum of its proper divisors (22737155).

68211453 is a wasteful number, since it uses less digits than its factorization.

68211453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22737154.

The product of its digits is 5760, while the sum is 30.

The square root of 68211453 is about 8259.0225208556. The cubic root of 68211453 is about 408.5881499703.

The spelling of 68211453 in words is "sixty-eight million, two hundred eleven thousand, four hundred fifty-three".