68311424 has 32 divisors (see below), whose sum is σ = 136488240. Its totient is φ = 34055680.

The previous prime is 68311421. The next prime is 68311433. The reversal of 68311424 is 42411386.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68311421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63854 + ... + 64914.

Almost surely, 2^68311424 is an apocalyptic number.

68311424 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

68311424 is a deficient number, since it is larger than the sum of its proper divisors (68176816).

68311424 is a wasteful number, since it uses less digits than its factorization.

68311424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1578 (or 1566 counting only the distinct ones).

The product of its digits is 4608, while the sum is 29.

The square root of 68311424 is about 8265.0725344670. The cubic root of 68311424 is about 408.7876620523.

The spelling of 68311424 in words is "sixty-eight million, three hundred eleven thousand, four hundred twenty-four".