68431516 has 6 divisors (see below), whose sum is σ = 119755160. Its totient is φ = 34215756.

The previous prime is 68431481. The next prime is 68431541. The reversal of 68431516 is 61513486.

It is a happy number.

68431516 is digitally balanced in base 9, because in such base it contains all the possibile digits an equal number of times.

68431516 is strictly pandigital in base 9.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8553936 + ... + 8553943.

Almost surely, 2^68431516 is an apocalyptic number.

It is an amenable number.

68431516 is a deficient number, since it is larger than the sum of its proper divisors (51323644).

68431516 is a wasteful number, since it uses less digits than its factorization.

68431516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17107883 (or 17107881 counting only the distinct ones).

The product of its digits is 17280, while the sum is 34.

The square root of 68431516 is about 8272.3343742864. The cubic root of 68431516 is about 409.0270724125.

The spelling of 68431516 in words is "sixty-eight million, four hundred thirty-one thousand, five hundred sixteen".