68153481 has 32 divisors (see below), whose sum is σ = 111546240. Its totient is φ = 41290560.

The previous prime is 68153471. The next prime is 68153489. The reversal of 68153481 is 18435186.

It is not a de Polignac number, because 68153481 - 2⁶ = 68153417 is a prime.

It is a super-2 number, since 2×68153481² = 9289793944834722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (68153489) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22641 + ... + 25473.

It is an arithmetic number, because the mean of its divisors is an integer number (3485820).

Almost surely, 2^68153481 is an apocalyptic number.

It is an amenable number.

68153481 is a deficient number, since it is larger than the sum of its proper divisors (43392759).

68153481 is an equidigital number, since it uses as much as digits as its factorization.

68153481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2865 (or 2847 counting only the distinct ones).

The product of its digits is 23040, while the sum is 36.

The square root of 68153481 is about 8255.5121585520. The cubic root of 68153481 is about 408.4723659649.

It can be divided in two parts, 6815 and 3481, that added together give a triangular number (10296 = T₁₄₃).

The spelling of 68153481 in words is "sixty-eight million, one hundred fifty-three thousand, four hundred eighty-one".